[Federal Register: December 19, 2002 (Volume 67, Number 244)]
[Rules and Regulations]
[Page 77653-77666]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr19de02-2]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2001-NE-26-AD; Amendment 39-12984; AD 2002-25-08]
RIN 2120-AA64
Airworthiness Directives; General Electric Company (GE) CF6-45, -
50, -80A, -80C2, and -80E1 Turbofan Engines
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment supersedes three existing airworthiness
directives (AD's), that are applicable to GE CF6-45, -50, -80A, -80C2,
and -80E1 turbofan engines. Those AD's currently require specific
handling of the GE CF6 series high pressure compressor rotor (HPCR)
stage 3-9 spools during a fluorescent penetrant inspection process, and
initial and repetitive ultrasonic and eddy current inspections of
certain HPCR stage 3-9 spools for cracks. This amendment removes the AD
that requires special handling of the spools during fluorescent-
penetrant inspection, and adjusts and combines the initial and
repetitive inspection requirements, currently listed in two AD's, into
one AD for the HPCR stage 3-9 spool. This amendment aligns repetitive
inspection requirements with the more stringent initial inspection
requirements mandated by AD 2000-16-12, Amendment 39-11868 (65 FR
50623, August 21, 2000) and terminates AD 95-18-14, Amendment 39-9361
(60 FR 46216, September 6, 1995) that is no longer necessary. The
actions specified by this AD are intended to prevent cracks, which can
cause separation of the HPCR stage 3-9 spool and possible uncontained
engine failure.
DATES: Effective January 23, 2003. The incorporation by reference of
certain publications listed in the regulations is approved by the
Director of the Federal Register as of January 23, 2003.
ADDRESSES: The service information referenced in this AD may be
obtained from General Electric Company via Lockheed Martin Technology
Services, 10525 Chester Road, Suite C, Cincinnati, Ohio 45215,
telephone (513) 672-8400, fax (513) 672-8422. This information may be
examined, by appointment, at the Federal Aviation Administration (FAA),
New England Region, Office of the Regional Counsel, 12 New England
Executive Park, Burlington, MA; or at the Office of the Federal
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Chris Gavriel, Aerospace Engineer,
Engine Certification Office, FAA, Engine and Propeller Directorate, 12
New England Executive Park, Burlington, MA 01803-5299; telephone (781)
238-7147; fax (781) 238-7199.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) by superseding AD 95-18-14,
Amendment 39-9361 (60 FR 46216, September 6, 1995); AD 99-24-15,
Amendment 39-11440 (64 FR 66554, November 29, 1999); and AD 2000-16-12,
Amendment 39-11868 (65 FR 50623, August 21, 2000); which are applicable
to GE CF6-45, -50, -80A, -80C2, and -80E1 turbofan engines, was
published in the Federal Register on June 12, 2002, (67 FR 40239). That
action proposed to combine the requirements of AD 99-24-15 and AD 2000-
16-12 with the following additional changes to:
[sbull] Adopt the accelerated initial inspection requirements of AD
2000-16-12 to spools acquiring 7,000 cycles-since-new (CSN) or more in
service after July 28, 2001,
[sbull] Relax initial compliance requirement for the CF6-45, -50,
and CF6-80A 13-inch billet spools to make them consistent with 9 and
10-inch billet spools,
[sbull] Add repetitive inspection requirements to the existing one-
time inspection requirement for the CF6-80C and -80E series engine
spool web and hub-to-web transition areas,
[sbull] Replace engine shop visit inspection threshold limits for
certain spools with cyclic limits,
[sbull] Add a time limit for slot bottom inspection for 13-inch
billet spools for CF6-45, -50, -80A engines and for 9-inch and 10-inch
billet spools for CF6-45, -50, -80A, and -80C engines,
[sbull] Add a time limit for the initial inspection and add repeat
inspection intervals for stage 3-5 slot bottom inspection for certain
spools,
[sbull] Add a time limit for one-time inspection of 8-inch billet
2-piece spools, and
[sbull] Provide for an alternative modular inspection for the slot
bottoms.
[[Page 77654]]
The action was prompted by a report of an uncontained failure of an
HPCR 3-9 spool.
The inspections must be done in accordance with the following GE
alert service bulletins (ASB's):
[sbull] ASB GE CF6-50 S/B 72-A1108, Revision 5, dated October 2,
2002.
[sbull] ASB GE CF6-50 S/B 72-A1131, Revision 4, dated October 2,
2002.
[sbull] ASB GE CF6-50 S/B 72-A1157, Revision 4, dated October 2,
2002.
[sbull] ASB GE CF6-80A S/B 72-A0678, Revision 5, dated October 2,
2002.
[sbull] ASB GE CF6-80A S/B 72-A0691, Revision 5, dated October 2,
2002.
[sbull] ASB GE CF6-80A S/B 72-A0719, Revision 5, dated October 2,
2002.
[sbull] ASB GE CF6-80C2 S/B 72-A0812, Revision 4, dated October 2,
2002.
[sbull] ASB GE CF6-80C2 S/B 72-A0848, Revision 8, dated October 2,
2002.
[sbull] ASB GE CF6-80C2 S/B 72-A0934, Revision 4, dated October 2,
2002.
[sbull] ASB GE CF6-80E1 S/B 72-A0135, Revision 3, dated October 2,
2002.
[sbull] ASB GE CF6-80E1 S/B 72-A0126, Revision 5, dated October 2,
2002.
[sbull] ASB GE CF6-80E1 S/B 72-A0137, Revision 4, dated October 2,
2002.
Comments
Interested persons have been afforded an opportunity to participate
in the making of this amendment. Due consideration has been given to
the comments received.
Web Inspection May Require Unscheduled Removals of Engines
Several commenters state that inspection of the web per Alert
Service Bulletin 72-A0848, after January 27, 2003, at 3,500 CSN is a
decrease from inspection requirements prior to that date. The
commenters feel that this requirement will force operators to remove
engines off wing to do the inspection in order to comply with this
proposed AD.
The FAA agrees. Based on information received from several
commenters, this requirement will have an adverse economic and
operational impact on several operators. We have reviewed a risk
analysis that includes an extension of the web inspection requirement
by six months, relative to the date proposed in the NPRM, and find that
the new risk is still acceptable under the guidelines appropriate for
this type of failure. As a result, the requirement has been extended by
six months.
Request To Add a FAX Number for the Reporting Requirements
One commenter requests that a FAX number be added to the reporting
requirements. Due to time differences around the world, the time
allotted for reporting may not be sufficient for other means of
communication
The FAA agrees. We have added a facsimile number to the reporting
requirements.
Request To Make Editorial Changes to Wording in the Requirements of the
AD
One commenter requests certain word changes, such as replacing
``by'' with ``at'', replacing ``within'' with ``before'', etc., and
adding certain paragraph headings. These changes are requested to make
the AD requirements consistent and more understandable.
The FAA partially agrees. We consider the consistency of wording
and the readability of the requirements of the AD to be of highest
concern. However, we also feel that many of the suggested changes are
stylistic and do not affect the technical accuracy or readability of
the AD. We have made some of the requested changes to ensure
consistency among the requirements and to improve the readability of
the requirements of the AD.
Requested Corrections to CF6-50 8-Inch Requirements
Several commenters request that the title for paragraph (d) be
corrected from ``CF6-508-inch'' to ``CF6-50 8-inch.'' The same
commenters also request that the FAA correct service bulletin
identifications in paragraphs (f), (g), and (j).
The FAA agrees. The title for paragraph (d) and the service
bulletin numbers in paragraphs (f), (g), and (j) have been corrected.
Request To Change the Definition of an Engine Shop Visit
Several commenters request that the definition of an engine shop
visit be changed to exclude compressor top and bottom case removals for
variable stator vane bushing replacements. The commenters feel the
inclusion was made to add another condition to the conditions already
identified as not constituting engine shop visits (ESV's).
The FAA agrees. We have changed the ESV definition paragraph to
exclude the induction of an engine into the shop for the purpose of
replacing the variable stator vane bushing.
Requested Clarification of the Requirements for Reinstallation of CF6-
50 Spools
One commenter feels that further explanation on the meaning of
paragraph (c)(7) is needed.
The FAA agrees. Addition of a heading ``Spool Reinstallation
Limit'' in this paragraph helps in clarifying the intent of this
paragraph. Furthermore, as the paragraph states, an engine with a spool
that has 10,500 CSN or more may not be installed (i.e. returned to
service). The paragraph does not require the removal of an installed
engine that has a spool with 10,500 CSN or more.
Request To Clarify Paragraph (a)(3)(ii) of This AD
One commenter requests clarification of paragraph (a)(3)(ii). The
commenter feels that paragraph (a)(3)(ii) is necessary to do paragraphs
(a)(3)(i) and (a)(3)(iii). The commenter feels that paragraphs
(a)(3)(i) and (a)(3)(iii) are redundant to (a)(3)(ii) and can be
deleted to simplify the requirements.
The FAA does not agree with deleting paragraphs (a)(3)(i) and
(a)(3)(iii). A spool that is exposed as a piece part (paragraph
(a)(3)(i)) is also exposed as a rotor (paragraph (a)(3)(ii)). Likewise,
a spool that requires a hub inspection in accordance with ASB CF6-50 S/
B 72-A1108 hub inspection (paragraph (a)(3)(iii)) must be exposed at
least to a rotor level {(a)(3)(ii){time} in order to do a module level
inspection. In this sense, (a)(3)(i) and (a)(3)(iii) are redundant to
(a)(3)(ii). However, each condition represents a common but distinct
and different level of planned engine maintenance, therefore it was
advisable to address each condition specifically for clarity.
Request To Clarify That Paragraph (a)(4)(iii) Is Correct
One commenter requests that the FAA verify that paragraph
(a)(4)(iii) and Table 5 are correct. The commenter feels that Table 5
of the AD causes a jump in the inspection interval. The commenter
provides a correction to Table 5 of the AD to correct a perceived error
in that Table.
The FAA has not been able to confirm the commenter's findings. The
cyclic intervals for the Table 5 requirements are A; 3,500 cycles, B;
3,000 cycles, C; 3,000 cycles, D; 2,500 cycles, E; 2,500 cycles, F;
2,000 cycles, and G; 2,000 cycles. These intervals are as intended.
Concern About Misinterpretation of the Inspection Deadline
One commenter states that one of the requirements of this proposed
rule may be misread as extending the inspection deadline of AD 2000-16-
12 to beyond July 28, 2001. The commenter also suggests that if all the
high-risk spools have been inspected, the proposed rule should be
expedited, since one year has passed since the deadline of AD 2000-16-
12.
[[Page 77655]]
The FAA agrees with the commenter on the need to expedite issuance
of this AD. While the statement in the Discussion Section of the
preamble of the proposal may be misinterpreted, the preamble is not
regulatory and in fact, even the structure of the preamble changes when
an NPRM is converted into a final rule. However, we have made changes
to the statement in the Supplementary Information section to clarify
the intent of this final rule. The intent of the proposed rule is to
apply the same requirement on the population of the spools that would
acquire 7,000 CSN after July 28, 2001. In regard to the comment
inquiring if all spools have been inspected, we are not aware of any
spool with 7,000 CSN or more that has not been inspected as required by
AD 2000-16-12.
Request To Include Fluorescent Penetrant Inspection (FPI) Requirements
One commenter suggests that AD 95-18-14 that addresses FPI of the
3-9 spool should be included, since Standard Practices are only a
suggestion and not a law. The commenter makes this comment out of
concern that under this proposed rule the benefit of an additional
inspection is eliminated.
The FAA does not agree. The requirements promulgated by AD 95-18-14
ensure that a spool is properly wetted internally prior to the FPI.
Although FPI of the 3-9 spool is desired for the areas not affected by
this AD, FPI is not the best technique for the inspection program
established by this AD. While FPI is effective only for detection of
surface cracks, the combination of ultrasonic and eddy current
inspections required by this AD provide both surface and subsurface
inspections that are of equal or greater sensitivity than FPI. The FPI
required by AD 95-18-14 was an emergency measure instituted in 1995
after discovery of cracking in the disk web area, an area not then
covered by ultrasonic and eddy current inspections. These inspection
methods were subsequently developed and incorporated into the
inspection plan. Additionally, AD 95-18-14 did not prescribe inspection
intervals, only inspection techniques, therefore, the benefit of AD 95-
18-14 was not considered in the risk analysis associated with the
current AD's.
Additional Spool Part Numbers (P/N's) as a Result of Unrelated Repairs
One commenter expresses a concern that additional spool P/N's,
which have been generated due to unrelated repairs on spools that are
subject to the inspection requirements of this AD, are not being
captured by the AD. The commenter feels that these P/N's should be
added to the AD. The commenter raises this issue to ensure that spools
with P/N's that were not included in the proposed rule are not excluded
from this inspection program.
The FAA agrees. The new P/N's will be incorporated in this AD.
However, their incorporation does not increase the originally affected
spool population size.
New Revisions to the Applicable Service Bulletins
One commenter, the manufacturer, advises the FAA that the
applicable service bulletins may be revised for nontechnical reasons.
The commenter feels that the latest revisions of the service bulletins
need to be incorporated into the AD.
The FAA agrees. The revision numbers and dates have been
incorporated into this final rule.
Request To Change Paragraph (j)(2)
One commenter requests that paragraph (j)(2) be changed to ensure
that the hub and web receive an initial inspection if either of the two
areas were not previously inspected. The same commenter suggests that
paragraph (j)(2) be split into two paragraphs to properly specify the
inspection deadlines for the hub and for the web, now that the
originally proposed deadlines have been changed to accommodate the
economic and operational burden associated with the web inspection.
The FAA agrees. We have changed paragraph (j)(2) of this AD.
Because of the new schedule requirements, two paragraphs, each with its
own schedule, are appropriate and the change has been made.
Request To Clarify ``Replace Before Further Flight'' Requirement on
CF6-50 Spools
One commenter observes that the ``replace before further flight''
requirements for the CF6-50 spools include the reject limits of service
bulletin CF6-50 S/B 72-A1131, while the preceding paragraph does not
include this service bulletin. The commenter raised this comment out of
concern that the inspection requirement per service bulletin CF6-50 S/B
72-A1131 was not identified in the preceding step.
The FAA partially agrees. In the current text, an inference may be
made that spools must be inspected to all three referenced bulletins at
each repeat inspection. The spool disposition requirements apply to
results of all prescribed inspections specified in all the steps of the
pertinent paragraph in the AD and not just to the preceding step.
Therefore, for further clarification a heading ``Spool Disposition''
has been inserted.
Request To Add a Heading of ``Spool Reinstallation Limit''
One commenter requests that the heading Spool Reinstallation Limit
be added before the applicable paragraphs. The commenter feels that the
addition will clarify the intent of the paragraphs.
The FAA agrees. We have added the heading to the applicable
paragraphs.
Concern Over the Availability of Training and Equipment
One commenter expresses concern that the requirements of ASB CF6-
80C2 72-A0934, Revision 3, can not be done because the equipment and
training necessary to carry out this inspection are not available at
this time. The commenter makes this comment out of concern that the
prescribed inspections could not be done, per the proposed rule
timetables, since there was no scheduled delivery of the necessary
equipment and associated training.
The FAA agrees. However, this issue has been addressed by the
engine manufacturer. Both equipment and training will be available in
time to enable the commenter to comply with the requirements of this
AD, therefore, no changes have been made.
Request To Change the Definition of a Shop Visit
One commenter states that the introduction of an engine into the
shop solely for the 3-9 spool inspection should not be considered a
shop visit. The request is made so that the stage 3-5 dovetail slot
bottom inspection for the CF6-80C2 13-inch billet spools would not be
forced if the spools could otherwise comply using the module level
inspection. The hub and web inspections can be done at module level
merely by removing the fan module from the core. The slot bottom
inspection requires additional disassembly to remove the compressor top
case. The request is made to avoid this additional disassembly.
The FAA disagrees. Material testing and stress analysis indicate
that the dovetail slot bottoms have a dwell-fatigue limitation.
Accordingly, the rule requires initial slot bottom inspection at the
earliest exposure (piece-part exposure or rotor exposure, which is
realized upon top case removal) but not later than the next required
inspection of the hub and/or web for dwell fatigue
[[Page 77656]]
cracking. As the cracking mode is the same for all areas, the FAA can
not apply lesser criteria to the slot bottoms.
Request To Include the 3-5 Dovetail Slot Bottom Inspection at Piece-
Part Level Only
One commenter requests that the repeat inspection of the CF6-80C
13-inch billet spool stage 3-5 dovetail slot bottoms be required at
piece-part exposure only. Accomplishment of this inspection at a module
level would require, at a minimum, the removal of the compressor top
case.
The FAA disagrees for reasons stated in the answer to the previous
comment.
Request To Clarify the Reference Date for the Initial Inspection
One commenter states that there is no reference date for the
initial inspection required in paragraph (a)(3) from which the operator
is to determine items (i), (ii), and (iii) under this paragraph. The
commenter uses the example that item (i) requires an inspection at the
first piece-part exposure (PPE) after 1,000 CSN. The spool may have had
several PPE's after 1,000 CSN in its life but never had the requirement
to inspect at those visits. The commenter requests clarification of the
reference date in this paragraph to ensure the proper time set.
The FAA disagrees. The proposal does not contain new requirements.
It consolidates requirements of existing airworthiness directives,
which include paragraph (a)(3). In the past, if an opportunity to have
a PPE arose as the commenter states, the requirement of AD 99-24-15
would have been applicable. Additionally, the cyclic requirements of
steps (i) and (ii) are associated with the cyclic life of the spool and
not an independent cyclic interval. The third step (iii) also does not
need the association with the effective date of this AD. Incorporation
of the change the commenter proposes would conflict with requirements
of the existing AD relative to the dovetail inspection. The proposed
change would also affect additional paragraphs of the rule, not
identified by the commenter, where similar arguments can be made.
Potential Confusion Over Requirements for Piece-Part Inspections
One commenter, the manufacturer, informs the FAA that a potential
for confusion exists regarding the requirements for the one-time hub
inspection of 8-inch billet spools. The existing wording in certain
ASB's could be interpreted such that a modular level inspection of the
hub could be performed, when in fact, piece-part inspection using
Procedure A is required to achieve the intended level of safety. The
manufacturer has revised the appropriate ASB's to add this
clarification and suggests additional wording be added to this rule to
ensure the correct procedure is used.
The FAA agrees. We have clarified the hub inspection requirements
for affected spools in paragraphs (d)(1), (h)(1), (k)(1), and (m)(1).
Request To Correct P/N's and SN's for CF6-50 16-Inch and 13-Inch
Billets
The same commenter states that the part number and serial number
relationships for the CF6-50 16-inch and 13-inch billet spools relative
to Table 2 were incorrect in the information that it sent to the FAA
and need to be corrected in paragraphs (a) and (b), respectively.
The FAA agrees. We have made the appropriate changes to the final
rule.
After careful review of the available data, including the comments
noted above, the FAA has determined that air safety and the public
interest require the adoption of the rule with the changes described
previously. The FAA has determined that these changes will neither
increase the economic burden on any operator nor increase the scope of
the AD.
Cost Analysis
There are approximately 3,147 engines of the affected design in the
worldwide fleet. The FAA estimates that 1,289 engines installed on
airplanes of U.S. registry would be affected by this proposed AD. The
FAA also estimates that it would take approximately 238 work hours per
engine to perform the proposed actions. The average labor rate is $60
per work hour. Required parts would cost approximately $35,000 per
engine. In addition, because of the previous AD actions, the FAA
estimates that only 72 percent (928 engines) of the engines installed
on airplanes of U.S. registry would be affected. Based on these
figures, the total cost of the proposed AD on U.S. operators is
estimated to be $45,731,840.
Regulatory Analysis
This final rule does not have federalism implications, as defined
in Executive Order 13132, because it would not have a substantial
direct effect on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government. Accordingly,
the FAA has not consulted with state authorities prior to publication
of this final rule.
For the reasons discussed above, I certify that this action (1) is
not a ``significant regulatory action'' under Executive Order 12866;
(2) is not a ``significant rule'' under the DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979); and (3) will not have a
significant economic impact, positive or negative, on a substantial
number of small entities under the criteria of the Regulatory
Flexibility Act. A final evaluation has been prepared for this action
and it is contained in the Rules Docket. A copy of it may be obtained
by contacting the Rules Docket at the location provided under the
caption ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, pursuant to the authority delegated to me by the
Administrator, the Federal Aviation Administration amends part 39 of
the Federal Aviation Regulations (14 CFR part 39) as follows:
PART 39--AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by removing Amendments 39-9361 (60 FR
46216, September 6, 1995), 39-11440 (64 FR 66554, November 29, 1999),
and 39-11868 (65 FR 50623, August 21, 2000), and by adding a new
airworthiness directive, Amendment 39-12984, to read as follows:
2002-25-08 General Electric Company (GE): Docket No. 2001-NE-26-AD.
Supersedes AD 95-18-14, Amendment 39-9361; AD 99-24-15, Amendment
39-11440; and AD 2000-16-12, Amendment 39-11868.
Applicability:This airworthiness directive (AD) is applicable to
GE CF6-45, -50, -80A, -80C2, and -80E1 turbofan engines with high
pressure compressor rotor (HPCR) stage 3-9 spools with part numbers
(P/N's) listed in the following Table 1 installed:
[[Page 77657]]
Table 1
------------------------------------------------------------------------
Engine model HPCR stage 3-9 spool P/N
------------------------------------------------------------------------
CF6-45/50 Series Engines............... 9136M89G02, 9136M89G03,
9136M89G06, 9136M89G07,
9136M89G08, 9136M89G09,
9136M89G17, 9136M89G18,
9136M89G19, 9136M89G21,
9136M89G22, 9136M89G27,
9136M89G29, 9253M85G01,
9253M85G02, 9273M14G01,
9331M29G01.
CF6-80A Series Engines................. 9136M89G10, 9136M89G11,
9136M89G20, 9136M89G21,
9136M89G22, 9136M89G27,
9136M89G28
CF6-80C2 Series Engines................ 1333M66G01, 1333M66G03,
1333M66G07, 1333M66G09,
1333M66G10, 1781M52P01,
1781M52P02, 1781M53G01,
1781M53G02 1781M53G03,
1781M53G04, 1781M53G05,
1781M53G06, 1781M53G07,
1781M53G08, 1781M53G09,
1781M53G10, 1854M95P01,
1854M95P02, 1854M95P03,
1854M95P04, 1854M95P05,
1854M95P06, 1854M95P07,
1854M95P08, 9380M28P05.
CF6-80E1 Series Engines................ 1669M22G01, 1669M22G03,
1782M22G01, 1782M22G02,
1782M22G04.
------------------------------------------------------------------------
These engines are installed on, but not limited to, Airbus A300,
A310, and A330 series, Boeing 747 and 767 series, and McDonnell
Douglas DC-10 and MD-11 series airplanes.
Note 1: This AD applies to each engine identified in the
preceding applicability provision, regardless of whether it has been
modified, altered, or repaired in the area subject to the
requirements of this AD. For engines that have been modified,
altered, or repaired so that the performance of the requirements of
this AD is affected, the owner/operator must request approval for an
alternative method of compliance in accordance with paragraph (p) of
this AD. The request should include an assessment of the effect of
the modification, alteration, or repair on the unsafe condition
addressed by this AD; and, if the unsafe condition has not been
eliminated, the request should include specific proposed actions to
address it.
Compliance: Compliance with this AD is required as indicated,
unless already done.
To detect cracks, which can cause separation of the HPCR stage
3-9 spool and possible uncontained engine failure, do the following:
CF6-45 and -50 16-Inch Billet Spools
(a) For CF6 HPCR stage 3-9 spool, part numbers (P/N's)
9136M89G02 and 9136M89G06; and for P/N's 9136M89G08, 9253M85G02,
9273M14G01, 9331M29G01 with serial numbers (SN's) listed in the
following Table 2, do the following:
Table 2
--------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------
MPOE3486 MPOE3487 MPOE3488 MPOE3489 MPOE3490 MPOE3491 MPOE3492
MPOG3832 MPOG3833 MPOG3834 MPOG3835 MPOG3836 MPOG3837 MPOG3838
MPOG3839 MPOG3840 MPOG3841 MPOG3842 MPOG3843 MPOG3844 MPOG3845
MPOG3846 MPOG3847 MPOG3848 MPOG3850 MPOG3851 MPOG5228 MPOG5230
MPOG5231 MPOG5232 MPOG6216 MPOG6727 MPOG6728 MPOG6729 MPOG6730
MPOG6731 MPOG6732 MPOG6733 MPOG6735 MPOG6736 MPOG6738 MPOG6739
MPOG6740 MPOG6741 MPOG6742 MPOG6743 MPOG6744 MPOG6745 MPOG6746
MPOG7713 MPOG7714 MPOG7715 MPOG7716 MPOG7717 MPOG7718 MPOG7719
MPOG7720 MPOG7721 MPOG7722 MPOG7723 MPOG7724 MPOG7725 MPOG7726
MPOG7727 MPOG7728 MPOG7729 MPOG7730 MPOG7731 MPOG7732 MPOG7733
MPOG7734 MPOG7735 MPOG7736 MPOG7737 MPOG7738 MPOG7739 MPOG7740
MPOG7741 MPOG7742 MPOG7743 MPOG7744 MPOG7819 MPOG7820 MPOG7821
MPOG7822 MPOG7823 MPOG7824 MPOG7825 MPOG7826 MPOG7827 MPOG7828
MPOG7829 MPOG7830 MPOG7831 MPOG7832 MPOG7833 MPOG7834 MPOG7835
MPOG7836 MPOG7837 MPOG7838 MPOG7839 MPOG8822 MPOG8823 MPOG8824
MPOG8825 MPOG8826 MPOG8827 MPOG8828 MPOG8829 MPOG8830 MPOG8831
MPOG8832 MPOG8833 MPOG8834 MPOG8835 MPOG8836 MPOG8837 MPOG9185
MPOG9186 MPOH0289 MPOH0290 MPOH0291 MPOH0292 MPOH0293 MPOH0294
MPOH0295 MPOH0296 MPOH0297 MPOH0298 MPOH0299 MPOH0300 MPOH0301
MPOH0302 MPOH0303 MPOH0304 MPOH0305 MPOH1805 MPOH2040 MPOH2041
MPOH2042 MPOH2043 MPOH2044 MPOH2045 MPOH2046 MPOH2047 MPOH2048
MPOH2049 MPOH2050 MPOH2051 MPOH2052 MPOH2053 MPOH2054 MPOH2055
MPOH2056 MPOH2057 MPOH2058 MPOH2059 MPOH2060 MPOH2061 MPOH2062
MPOH2829 MPOH2830 MPOH2831 MPOH2832 MPOH2833 MPOH2834 MPOH2835
MPOH2836 MPOH2837 MPOH2838 MPOH2839 MPOH2840 MPOH2841 MPOH2842
MPOH2843 MPOH2844 MPOH2845 MPOH2846 MPOH2847 MPOH2848 MPOH2849
MPOH2850 MPOH2851 MPOH2852 MPOH2853 MPOH2854 MPOH2855 MPOH2856
MPOH2857 MPOH2858 MPOH4307 MPOH4308 MPOH4309 MPOH4310 MPOH4311
MPOH4312 MPOH4313 MPOH5277 MPOH5278 MPOH5279 MPOH5280 MPOH5281
MPOH5282 MPOH5283 MPOH5520 MPOH5530 MPOH5531 MPOH5532 MPOH5533
MPOH5534 MPOH5535 MPOH5536 MPOH5537 MPOH5538 MPOH5539 MPOH5540
MPOH5541 MPOH5542 MPOH5543 MPOH5544 MPOH5545 MPOH5546 MPOH5547
MPOH5548 MPOH5549 MPOH5550 MPOH5551 MPOH5552 MPOH5553 MPOH5554
MPOH7020 MPOH7021 MPOH7022 MPOH7023 MPOH7024 MPOH7025 MPOH7026
MPOH7027 MPOH7028 MPOH7030 MPOH7960 MPOH7965 MPOH7966 MPOH7967
MPOH7968 MPOH7969 MPOH7970 MPOH7971 MPOH7972 MPOH7973 MPOH7974
MPOH7975 MPOH8638 MPOH8639 MPOH8640 MPOH8641 MPOH8642 MPOH8643
MPOH8644 MPOH8645 MPOH8646 MPOH8647 MPOH8648 MPOH8649 MPOH8650
MPOH8651 MPOH8652 MPOH8653 MPOH8654 MPOH8655 MPOH8656 MPOH8657
MPOH8658 MPOH8659 MPOH8677 MPOH8678 MPOH8679 MPOH8680 MPOH8682
MPOH8683 MPOH8684 MPOJ1796 MPOJ1797 MPOJ1798 MPOJ1799 MPOJ1800
[[Page 77658]]
MPOJ1801 MPOJ1803 MPOJ1804 MPOJ1806 MPOJ1930 MPOJ1931 MPOJ1932
MPOJ1933 MPOJ1934 MPOJ1935 MPOJ1936 MPOJ1938 MPOJ1939 MPOJ1940
MPOJ1941 MPOJ1942 MPOJ1943 MPOJ1944 MPOJ1945 MPOJ1946 MPOJ1947
MPOJ1948 MPOJ1949 MPOJ1950 MPOJ1951 MPOJ1953 MPOJ1954 MPOJ1955
MPOJ1956 MPOJ1957 MPOJ1958 MPOJ2420 MPOJ2421 MPOJ2422 MPOJ2423
MPOJ2424 MPOJ2425 MPOJ2426 MPOJ2427 MPOJ2428 MPOJ2429 MPOJ2430
MPOJ2431 MPOJ2432 MPOJ2433 MPOJ2434 MPOJ2435 MPOJ2436 MPOJ2437
MPOJ2438 MPOJ2439 MPOJ2440 MPOJ2441 MPOJ2442 MPOJ2443 MPOJ2444
MPOJ2445 MPOJ2446 MPOJ2447 MPOJ2448 MPOJ2449 MPOJ2450 MPOJ4173
MPOJ4174 MPOJ5185 MPOJ5186 MPOJ6035 MPOJ6036 MPOJ6039 MPOJ6040
MPOJ6041 MPOJ6042 MPOJ6043 MPOJ6044 MPOJ6045 MPOJ6046 MPOJ6047
MPOJ6048 MPOJ6049 MPOJ6050 MPOJ6051 MPOJ6052 MPOJ6053 MPOJ6054
MPOJ6055 MPOJ6056 MPOJ6057 MPOJ6058 MPOJ6059 MPOJ6060 MPOJ6061
MPOJ6062 MPOJ6063 MPOJ6064 MPOJ6065 MPOJ6066 MPOJ6067 MPOJ6068
MPOJ6500 MPOJ6501 MPOJ6502 MPOJ6503 MPOJ6505 MPOJ6506 MPOJ6507
MPOJ6508 MPOJ6509 MPOJ6510 MPOJ6511 MPOJ6512 MPOJ6513 MPOJ6514
MPOJ6515 MPOJ6516 MPOJ6517 MPOJ7632 MPOJ7633 MPOJ7634 MPOJ7635
MPOJ7636 MPOJ7637 MPOJ7638 MPOJ7639 MPOJ7640 MPOJ7641 MPOJ7642
MPOJ7643 MPOJ8046 MPOJ8047 MPOJ8048 MPOJ8049 MPOJ8050 MPOJ8051
MPOJ9308 MPOJ9309 MPOJ9310 MPOJ9311 MPOJ9312 MPOJ9313 MPOJ9314
MPOJ9315 MPOK1233 MPOK1234 MPOK1235 MPOK1236 MPOK1237 MPOK1238
MPOK1239 MPOK1240 MPOK1824 MPOK1825 MPOK1826 MPOK1827 MPOK1828
MPOK1829 MPOK1830 MPOK1831 MPOK1832 MPOK2694 MPOK2695 MPOK3067
MPOK3068 MPOK3069 MPOK3070 MPOK3071 MPOK4659 MPOK4660 MPOK4661
MPOK4662 MPOK4663 MPOK4664 MPOK4665 MPOK4666 MPOK4667 MPOK5082
MPOK5083 MPOK5084 MPOK5085 MPOK5086 MPOK5087 MPOK5088 MPOK5520
MPOK5521 MPOK5522 MPOK5955 MPOK5956 MPOK5957 MPOK5958 MPOK5959
MPOK5960 MPOK5961 MPOK5962 MPOK5963 MPOK5964 MPOK6247 MPOK6248
MPOK6249 MPOK6250 MPOK6251 MPOK6252 MPOK6253 MPOK6254 MPOK6255
MPOK6256 MPOK6257 MPOK6715 MPOK6716 MPOK6823 MPOK6824 MPOK6825
MPOK6826 MPOK6827 MPOK6828 MPOK6829 MPOK6830 MPOK6831 MPOK7226
MPOK7227 MPOK7228 MPOK7229 MPOK7230 MPOK7231 MPOK7232 MPOK7233
MPOK7234 MPOM2128 MPOM2129 MPOM2130 MPOM2131 MPOM2132 MPOM2133
MPOM2134 MPOM2135 MPOM2136 MPOM2137 MPOM2138 MPOM2357 MPOM2358
MPOM2359 MPOM2360 MPOM2361 MPOM2362 MPOM2363 MPOM2364 MPOM2365
MPOM2366 MPOM2461 MPOM2462 MPOM5521 MPOM5522 MPOM5523 MPOM5524
MPOM5525 MPOM5526 MPOM5527 MPOM5528 MPOM5529 MPOM5530 MPOM5531
MPOM5532 MPOM5533 MPOM5534 MPOM5535 MPOM5536 MPOM5537 MPOM6151
MPOM6152 MPOM6153 MPOM6154 MPOM6155 MPOM6156 MPOM6157 MPOM6158
MPOM6159 MPOM6160 MPOM6161 MPOM6162 MPOM7087 MPOM7088 MPOM7089
MPOM7091 MPOM7092 MPOM7093 MPOM7094 MPOM7095 MPOM7096 MPOM7097
MPOM7098 MPOM7099 MPOM7100 MPOM7101 MPOM7102 MPOM7103 MPOM7104
MPOM7105 MPOM7106 MPOM7107 MPOM7108 MPOM7109 MPOM8297 MPOM8298
MPOM8299 MPOM8300 MPOM8301 MPOM8302 MPOM9246 MPOM9257 MPOM9258
MPOM9259 MPOM9260 MPOM9261 MPOM9262 MPOM9265 MPOM9721 MPOM9722
MPOM9723 MPON0051 MPON0052 MPON0053 MPON0055 MPON0056 MPON0057
MPON0058 MPON0059 MPON0060 MPON0061 MPON0062 MPON0063 MPON0064
MPON0065 MPON0066 MPON0067 MPON0068 MPON0069 MPON0073 MPON0074
MPON0075 MPON0076 MPON1077 MPON1078 MPON1079 MPON1080 MPON1081
MPON1082 MPON1084 MPON1085 MPON1086 MPON1087 MPON1088 MPON1089
MPON1090 MPON1091 MPON1092 MPON1093 MPON1094 MPON1095 MPON1096
MPON1097 MPON1098 MPON1099 MPON1100 MPON1642 MPON4250 MPON4252
MPON4254 MPON4255 MPON4256
--------------------------------------------------------------------------------------------------------------------------------------------------------
Initial Inspection
(1) If the spool has not already been inspected using one of the
alert service bulletins (ASB's) or service bulletins (SB's) listed
in Column A of the following Table 3; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, inspect hub and
bore in accordance with alert service bulletin
(ASB) CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002,
and the following compliance times:
Table 3
----------------------------------------------------------------------------------------------------------------
CF6-45 and -50 SB No. Procedures (70-32-XX) in Standard Practices Manual GEK9250
----------------------------------------------------------------------------------------------------------------
Column A Column B Column C Column D Column E
----------------------------------------------------------------------------------------------------------------
SB 72-888, Revision 3, dated 70-32-09, Revision 70-32-10, 71, 70-32-13, 70-32-14, TR 70-
January 31, 1991. 71, dated October Revision dated Temporary 26, dated August
1, 1995. October 1, 1995. Revision (TR), 70- 26, 1996.
25, dated August
26, 1996.
SB 72-888, Revision 4, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
March 28, 1991. 72, dated 72, dated 72, dated 72, dated
November 15, 1996. November 15, 1996. November 15, 1996. November 15,
1996.
[[Page 77659]]
SB 72-888, Revision 5, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
November 7, 1994. 74, dated May 1, 74, dated May 1, 73, dated 73, dated
1998. 1998. November 1, 1997. November 1, 1997.
SB 72-888, Revision 6, dated .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
December 22, 1995. 75, dated 75, dated 75, dated
December 15, 1998. December 15, 1998. December 15,
1998.
SB 72-1000, Original dated .................. .................. 70-32-13, TR 70- 70-32-14, TR 70-
December 14, 1990. 41, dated 42, dated
February 10, 1999. February 10,
1999.
SB 72-1000, Revision 1, dated .................. .................. 70-32-13, Revision 70-32-14, Revision
March 28, 1991. 76, dated May 15, 76, dated May 15,
1999. 1999.
SB 72-1000, Revision 2, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70-
September 9, 1993. 39, dated 40, dated
December 15, 1998. December 15,
1998.
SB 72-1000, Revision 3, dated .................. .................. 70-32-17, Revision 70-32-18, Revision
December 22, 1995. 76, dated May 15, 76, dated May 15,
1999. 1999.
SB 72-1108, Original, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70-
November 6, 1995. 47, dated October 48, dated October
28, 1999. 28, 1999.
SB 72-1108, Revision 1, dated ..................
July 29, 1996.
ASB 72-A1108, Revision 2, dated ..................
October 28, 1999.
ASB 72-A1108, Revision 3, dated ..................
November 12, 1999.
ASB 72-A1108, Revision 4, dated ..................
June 6, 2001.
ASB CF6-50 S/B 72-A1108, ..................
Revision 5, dated October 2,
2002.
----------------------------------------------------------------------------------------------------------------
(i) For spools with greater than 3,500 cycles-since-new (CSN) on
the effective date of this AD, inspect before further flight.
(ii) For spools with 3,500 or fewer CSN, on the effective date
of this AD, inspect at the first piece-part exposure (PPE) after
1,000 CSN or before 3,500 CSN, whichever occurs earlier.
(2) For spools that have not been inspected using ASB CF6-50 S/B
72-A1131, Revision 4, dated October 2, 2002, or an earlier revision
of ASB CF6-50 S/B 72-A1131 or SB 72-1131, inspect the web and hub-
to-web transition areas in accordance with the requirements of ASB
CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at the first
PPE after 1,000 CSN, but before 4,000 additional cycles in-service
(CIS) after the effective date of this AD.
(3) For spools that have not been inspected using ASB CF6-50 S/B
72-A1157, Revision 4, dated October 2, 2002, or an earlier revision
of ASB CF6-50 S/B 72-A1157, inspect the stage 3-5 dovetail slot
bottoms in accordance with the requirements of ASB CF6-50 S/B 72-
A1157, Revision 4, dated October 2, 2002, at the earliest of:
(i) The first PPE after 1000 CSN, or
(ii) The first HPC rotor exposure after 1000 CSN, or
(iii) The next required inspection to ASB CF6-50 S/B 72-A1108,
Revision 5, dated October 2, 2002.
Repetitive Inspection
(4) For spools that have already been inspected using one of the
ASB's or SB's listed in Column A of Table 3; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, reinspect the hub
and bore in accordance with the requirements of ASB CF6-50 S/B 72-
A1108, Revision 5, dated October 2, 2002, and the stage 3-5 dovetail
slot bottoms in accordance with ASB CF6-50 S/B 72-A1157, Revision 4,
dated October 2, 2002, at the earliest of:
(i) Each PPE with more than 1,000 cycles-since-last-inspection
(CSLI) and 3,500 CSN, or
(ii) From July 29, 2001 through January 27, 2003, before the
cycle limits of the following Table 4:
Table 4
------------------------------------------------------------------------
CSN at last inspection Repeat inspection by
------------------------------------------------------------------------
(A) 6,000 or fewer CSN................. 3,500 CSLI.
(B) 6,001 to 7,000 CSN................. 9,500 CSN.
(C) 7,001 to 8,000 CSN................. 2,500 CSLI.
(D) 8,001 to 8,500 CSN................. 10,500 CSN.
(E) 8,501 or more CSN.................. 2,000 CSLI.
------------------------------------------------------------------------
(iii) After January 27, 2003, before the cycle limits of the
following Table 5:
Table 5.
------------------------------------------------------------------------
CSN at last inspection Repeat inspection by
------------------------------------------------------------------------
(A) 5,000 or fewer CSN................. 3,500 CSLI.
(B) 5,001 to 5,500 CSN................. 8,500 CSN.
(C) 5,501 to 6,500 CSN................. 3,000 CSLI.
(D) 6,501 to 7,000 CSN................. 9,500 CSN.
(E) 7,001 to 8,000 CSN................. 2,500 CSLI.
(F) 8,001 to 8,500 CSN................. 10,500 CSN.
(G) 8,501 or more CSN.................. 2,000 CSLI.
------------------------------------------------------------------------
Spool Disposition
(5) If inspection findings equal or exceed the reject limits
established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2,
2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002;
or ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002,
replace spool before further flight.
CF6-45 and -50 13-inch Billet Spools
(b) For CF6 HPC Rotor Stage 3-9 Spool, P/N's 9136M89G03,
9136M89G07, 9136M89G09, 9136M89G17, 9136M89G18, 9253M85G01, and for
P/N's 9136M89G08, 9253M85G01, 9273M14G01, and 9331M29G01 with serial
numbers that are not listed in Table 2, do the following:
Initial Inspection
(1) If the spool has greater than 7,000 CSN on the effective
date of this AD and has not
[[Page 77660]]
already been inspected using one of the ASB's or SB's listed in
Column A of Table 3; OR a combination of one procedure from Column B
AND one from Column C; OR a combination of one procedure from Column
D AND one from Column E, inspect hub and bore in accordance with ASB
CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002 before
further flight.
(2) If the spool has 7,000 or fewer CSN on the effective date of
this AD and has not already been inspected using one of the ASB's or
SB's listed in Column A of Table 3; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, inspect hub and
bore in accordance with ASB CF6-50 S/B 72-A1108, Revision 5, dated
October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first engine shop visit (ESV) after 4,000 CSN, or
(iii) From July 29, 2001, through January 27, 2003, before 7,000
CSN, and after January 27, 2003, before 4,000 CSN.
(3) For spools that have not been inspected using ASB CF6-50 S/B
72-A1131, Revision 4, dated October 2, 2002, or an earlier revision
of ASB CF6-50 S/B 72-A1131 or SB 72-1131, inspect the web and hub-
to-web transition areas in accordance with the requirements of ASB
CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at the
earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
(4) For spools that have not been inspected using ASB CF6-50 S/B
72-A1157, Revision 4, dated October 2, 2002, or an earlier revision
of ASB CF6-50 S/B 72-A1157, inspect the stage 3-5 dovetail slot
bottoms in accordance with the requirements of ASB CF6-50 S/B 72-
A1157, Revision 4, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
Repetitive Inspection
(5) For spools that have already been inspected using one of the
ASB's or SB's listed in Column A of Table 3; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, reinspect the hub
and bore in accordance with the requirements of ASB CF6-50 S/B 72-
A1108, Revision 5, dated October 2, 2002, at the earliest of:
(i) Each PPE with more than 1,000 CSLI and 4,000 CSN, or
(ii) Each ESV with more than 2,000 CSLI and 4,000 CSN, or
(iii) Before 4,000 CSLI.
Spool Disposition
(6) If inspection findings equal or exceed the reject limits
established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2,
2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002;
or ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002,
replace spool before further flight.
CF6-45 and -50 9 and 10-Inch Billet Spools
(c) For CF6 HPCR stage 3-9 spool, P/N's 9136M89G19, 9136M89G21,
9136M89G22 and 9136M89G27, do the following:
Initial Inspection
(1) If the spool has greater than 7,000 CSN on the effective
date of this AD and has not already been inspected using one of the
ASB's or SB's listed in Column A of Table 3; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, inspect the hub
and bore in accordance with ASB CF6-50 S/B 72-A1108, Revision 5,
dated October 2, 2002 before further flight.
(2) If the spool has 7,000 or fewer CSN on the effective date of
this AD, and has not already been inspected using one of the ASB's
or SB's listed in Column A of Table 3; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, inspect the hub
and bore in accordance with ASB CF6-50 S/B 72-A1108, Revision 5,
dated October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 3,000 CSN, or
(iii) From July 29, 2001 through January 27, 2003, before 7,000
CSN, and after January 27, 2003, before 3,500 CSN.
(3) For spools that have not been inspected using ASB CF6-50 S/B
72-A1131, Revision 4, dated October 2, 2002, or an earlier revision
of ASB CF6-50 S/B 72-A1131 or SB CF6-50 S/B 72-1131, inspect the web
and hub-to-web transition areas in accordance with the requirements
of ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at
the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
(4) For spools that have not been inspected using ASB CF6-50 S/B
72-A1157, Revision 4, dated October 2, 2002, or an earlier revision
of ASB CF6-50 S/B 72-A1157, inspect the stage 3-5 dovetail slot
bottom in accordance with the requirements of ASB CF6-50 S/B 72-
A1157, Revision 4, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
Repetitive Inspection
(5) For spools that have already been inspected using one of the
ASB's or SB's listed in Column A of Table 3; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, reinspect the hub
and bore in accordance with the requirements of ASB CF6-50 S/B 72-
A1108, Revision 5, dated October 2, 2002, at the earliest of:
(i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or
(ii) From July 29, 2001, through January 27, 2003, before the
cycle limits of the following Table 6, or:
Table 6
------------------------------------------------------------------------
CSN at last inspection Reinspect by
------------------------------------------------------------------------
(A) 3,500 or fewer CSN................. 7,000 CSN.
(B) 3,501 to 6,000 CSN................. 3,500 CSLI.
(C) 6,001 to 7,000 CSN................. 9,500 CSN.
(D) 7,001 to 8,000 CSN................. 2,500 CSLI.
(E) 8,001 to 8,500 CSN................. 10,500 CSN.
(F) 8,501 or more CSN.................. 2,000 CSLI.
------------------------------------------------------------------------
(iii) After January 27, 2003, before the cycle limits of Table
5.
Spool Disposition
(6) If inspection findings equal or exceed the reject limits
established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2,
2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002;
or ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002;
replace spool before further flight.
Spool Reinstallation Limit
(7) After the effective date of this AD, do not install any
engine that has an HPCR stage 3-9 spool, P/N's 9136M89G19,
9136M89G21, 9136M89G22, and 9136M89G27, installed where the spool
has 10,500 or more CSN.
CF6-45 and -50 8-Inch Billet 2-Piece spools
(d) For CF6 HPCR stage 3-9 spool, P/N 9136M89G29, do the
following:
(1) If the spool has not already been inspected using one of the
ASB's or SB's listed in Column A of Table 3; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, inspect hub and
bore in accordance with the piece-part level inspection of ASB CF6-
50 S/B 72-A1108, Revision 5, dated October 2, 2002, at the earlier
of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(2) For spools that have not been inspected using ASB CF6-50 S/B
72-A1131, Revision 4, dated October 2, 2002, or an earlier revision
of ASB CF6-50 S/B 72-A1131 or SB 72-1131, inspect the web and hub-
to-web transition areas in accordance with the requirements of ASB
CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at the
earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(3) For spools that have not been inspected using ASB CF6-50 S/B
72-A1157, Revision 4, dated October 2, 2002, or an earlier revision
of ASB 72-A1157, inspect the stage 3-5 dovetail slot bottom in
accordance with the requirements of ASB CF6-50 S/B 72-A1157,
Revision 4, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
Spool Disposition
(4) If inspection findings equal or exceed the reject limits
established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2,
2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002;
or ASB CF6-50 S/B 72-A1157, Revision 4, dated
[[Page 77661]]
October 2, 2002; replace spool before further flight.
CF6-80A 16-Inch Billet Spools
(e) For CF6 HPCR stage 3-9 spool, P/N's 9136M89G10 with SN's
MPOM0054, MPOM7090, MPOM8303, MPOM8304, MPOM9263, MPOM9264,
MPON0054, MPON0071, MPON0072, MPON1643, MPON4251, or MPON4253, do
the following:
Initial Inspection
(1) If the spool has not already been inspected using one of the
ASB's or SB's listed in Column A of the following Table 7; OR a
combination of one procedure from Column B AND one from Column C; OR
a combination of one procedure from Column D AND one from Column E,
inspect hub and bore in accordance with ASB CF6-80A S/B 72-A0678,
Revision 5, dated October 2, 2002, and the following compliance
times:
Table 7
----------------------------------------------------------------------------------------------------------------
CF6-80A SB No. Procedures (70-32-XX) in standard practices manual GEK9250
----------------------------------------------------------------------------------------------------------------
Column A Column B Column C Column D Column E
----------------------------------------------------------------------------------------------------------------
SB 72-500, Revision 3, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, 70-32-14, TR 70-
March 19, 1991. 71, dated October 71, dated October Temporary 26, dated August
1, 1995. 1, 1995. Revision (TR), 70- 26, 1996.
25, dated August
26, 1996.
SB 72-500, Revision 4, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
July 1, 1991. 72, dated 72, dated 72, dated 72, dated
November 15, 1996. November 15, 1996. November 15, 1996. November 15,
1996.
SB 72-500, Revision 5, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
November 7, 1994. 74, dated May 1, 74, dated May 1, 73, dated 73, dated
1998. 1998. November 1, 1997. November 1, 1997.
SB 72-500, Revision 6, dated .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
December 22, 1995. 75, dated 75, dated 75, dated
December 15, 1998. December 15, 1998. December 15,
1998.
SB 72-583, Original, dated .................. .................. 70-32-13, TR 70- 70-32-14, TR 70-
December 20, 1990. 41, dated 42, dated
February 10, 1999. February 10,
1999.
SB 72-583, Revision 1, dated .................. .................. 70-32-13, Revision 70-32-14, Revision
March 18, 1991. 76, dated May 15, 76, dated May 15,
1999. 1999.
SB 72-583, Revision 2, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70-
July 15, 1991. 39, dated 40, dated
December 15, 1998. December 15,
1998.
SB 72-583, Revision 3, dated .................. .................. 70-32-17, Revision 70-32-18, Revision
July 24, 1991. 76, dated May 15, 76, dated May 15,
1999. 1999.
SB 72-583, Revision 4, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70-
September 15, 1993. 47, dated October 48, dated October
28, 1999. 28, 1999.
SB 72-583, Revision 5, dated
December 22, 1995.
SB 72-678, Original, dated
November 6, 1995.
SB 72-678, Revision 1, dated
July 29, 1996.
ASB 72-A678, Revision 2, dated
October 28, 1999.
ASB 72-A678, Revision 3, dated
November 12, 1999.
ASB 72-A0678, Revision 4, dated
June 6, 2001.
ASB CF6-80A S/B 72-A0678,
Revision 5, dated October 2,
2002.
----------------------------------------------------------------------------------------------------------------
(i) For spools with greater than 3,500 CSN on the effective date
of this AD, inspect before further flight.
(ii) For spools with 3,500 or fewer CSN on the effective date of
this AD, inspect at the first PPE after 1,000 CSN or before 3,500
CSN, whichever occurs earlier.
(2) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0691, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0691 or SB 72-0691, inspect the web
and hub-to-web transition areas in accordance with the requirements
of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at
the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS accumulated after the effective
date of this AD.
(3) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0719, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0719, inspect the stage 3--5
dovetail slot bottom in accordance with the requirements of ASB CF6-
80A S/B 72-A0719, Revision 5, dated October 2, 2002, at the earliest
of:
(i) The first PPE after 1,000 CSN, or
(ii) The first HPCR exposure after 1,000 CSN, or
(iii) The next required inspection to ASB
CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002.
Repetitive Inspections
(4) For spools that have already been inspected using one of the
ASB's or SB's listed in Column A of Table 7; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D and one from Column E, reinspect the hub
and bore in accordance with the requirements of ASB CF6-80A S/B 72-
A0678, Revision 5, dated October 2, 2002; and the dovetail slot
bottoms in accordance with the requirements of ASB CF6-80A S/B 72-
A0719, Revision 5, dated October 2, 2002, at the earliest of:
(i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or
[[Page 77662]]
(ii) From July 29, 2001 through January 27, 2003 before the
cycle limits of Table 4, or
(iii) After January 27, 2003, before the cycle limits of Table
5.
Spool Disposition
(5) If inspection findings equal or exceed the reject limits
established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October
2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2,
2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2,
2002; replace spool before further flight.
Spool Reinstallation Limit
(6) After the effective date of this AD, do not install any
engine that has an HPCR stage 3-9 spool P/N 9136M89G10 with serial
numbers (SN's) MPOM0054, MPOM7090, MPOM8303, MPOM8304, MPOM9263,
MPOM9264, MPON0054, MPON0071, MPON0072, MPON1643, MPON4251, or
MPON4253, installed where the spool has 10,500 or more CSN.
CF6-80A 13-Inch Billet Spools
(f) For all other CF6 HPCR stage 3-9 spools,
P/N 9136M89G10, with SN's that are not listed in paragraph (e)
of this AD, and P/N 9136M89G11, do the following:
Initial Inspection
(1) If the spool has greater than 7,000 CSN on the effective
date of this AD and has not already been inspected using one of the
ASB's or SB's listed in Column A of Table 7; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, inspect hub and
bore in accordance with ASB CF6-80A 72-A0678, Revision 5, dated
October 2, 2002 before further flight.
(2) If the spool has 7,000 or fewer CSN on the effective date of
this AD and has not already been inspected using one of the ASB's or
SB's listed in Column A of Table 7; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, inspect hub and
bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated
October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 5,000 CSN or
(iii) From July 29, 2001, through January 27, 2003 before 7,000
CSN, and after January 27, 2003, before 5,000 CSN.
(3) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0691, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0691 or SB 72-0691, inspect the web
and hub-to-web transition areas in accordance with the requirements
of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at
the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
(4) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0719, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0719, inspect the dovetail slot
bottom in accordance with the requirements of ASB CF6-80A S/B 72-
A0719, Revision 5, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
Repetitive Inspection
(5) For spools installed in CF6-80A1 and CF6-80A3 engines that
were inspected using one of the ASB's or SB's listed in Column A of
Table 7; OR a combination of one procedure from Column B and one
from Column C; OR a combination of one procedure from Column D and
one from Column E, reinspect hub and bore in accordance with alert
ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the
earliest of:
(i) Each PPE with more than 1,000 CSLI and 5,000 CSN, or
(ii) Each ESV with more than 2,000 CSLI and 5,000 CSN, or
(iii) Within 4,000 CSLI and more than 5,000 CSN.
(6) Spools installed in CF6-80A and CF6-80A2 engines previously
inspected using one of the ASB's or SB's listed in Column A of Table
7; OR a combination of one procedure from Column B AND one from
Column C; OR a combination of one procedure from Column D AND one
from Column E, reinspect hub and bore in accordance with ASB CF6-80A
S/B 72-A0678, Revision 5, dated October 2, 2002, at the earliest of:
(i) Each PPE with more than 1,000 CSLI and 5,000 CSN, or
(ii) Each ESV with more than 1,500 CSLI and 5,000 CSN, or
(iii) Within 4,000 CSLI and more than 5,000 CSN.
Spool Disposition
(7) If inspection findings equal or exceed the reject limits
established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October
2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2,
2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2,
2002; replace spool before further flight.
CF6-80A 9 and 10-Inch Billet Spools
(g) For CF6 HPCR stage 3-9 spools, P/N's 9136M89G20, 9136M89G21,
9136M89G22 and 9136M89G27, do the following:
Initial Inspection
(1) If the spool has greater than 7,000 CSN on the effective
date of this AD and has not already been inspected using one of the
ASB's or SB's listed in Column A of Table 7; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, inspect hub and
bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated
October 2, 2002 before further flight.
(2) If the spool has 7,000 or fewer CSN on the effective date of
this AD and has not already been inspected using one of the ASB's or
SB's listed in Column A of Table 7; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, inspect hub and
bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated
October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 3,000 CSN or
(iii) From July 29, 2001, through January 27, 2003, before 7,000
CSN, and after January 27, 2003, before 5,000 CSN.
(3) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0691, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0691, or SB 72-0691, inspect the web
and hub-to-web transition areas in accordance with the requirements
of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at
the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
(4) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0719, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0719 inspect the dovetail slot
bottom in accordance with the requirements of ASB CF6-80A S/B 72-
A0719, Revision 5, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
Repetitive Inspection
(5) For spools that have already been inspected using one of the
ASB's or SB's listed in Column A of Table 7; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, reinspect hub and
bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated
October 2, 2002, at the earliest of:
(i) Each PPE with more than 1,000 CSLI and 5,000 CSN, or
(ii) From July 29, 2001 through January 27, 2003, before the
cycle limits of Table 6.
(iii) After January 27, 2003, before the cycle limits of the
following Table 8:
Table 8
------------------------------------------------------------------------
CSN at last inspection Repeat inspection by
------------------------------------------------------------------------
(A) 1,500 or fewer CSN................. 5,000 CSN
(B) 1,501 to 5,000 CSN................. 3,500 CSLI
(C) 5,001 to 5,500 CSN................. 8,500 CSN
(D) 5,501 to 6,501 CSN................. 3,000 CSLI
(E) 6,501 to 7,000 CSN................. 9,500 CSN
(F) 7,001 to 8,000 CSN................. 2,500 CSLI
(G) 8,001 to 8,500 CSN................. 10,500 CSN
(H) 8,501 or more CSN.................. 2,000 CSLI
------------------------------------------------------------------------
Spool Disposition
(6) If inspection findings equal or exceed the reject limits
established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October
2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2,
2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2,
2002; replace spool before further flight.
[[Page 77663]]
Spool Reinstallation Limit
(7) After the effective date of this AD, do not install any
engine that has an HPCR stage 3-9 spool, P/N's 9136M89G20,
9136M89G21, 9136M89G22, and 9136M89G27, installed where the spool
has 10,500 or more CSN.
CF6-80A 8-Inch Billet 2-Piece Spools
(h) For CF6 HPCR stage 3-9 spool, P/N 9136M89G28, do the
following:
(1) If the spool has not already been inspected using one of the
ASB's or SB's listed in Column A of Table 7; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, inspect hub and
bore in accordance with the piece-part level inspection of ASB CF6-
80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the earlier
of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(2) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0691, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0691, or SB 72-0691, inspect the web
and hub-to-web transition areas in accordance with the requirements
of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at
the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(3) For spools that have not been inspected using ASB CF6-80A S/
B 72-A0719, Revision 5, dated October 2, 2002, or an earlier
revision of ASB CF6-80A S/B 72-A0719 inspect the stage 3--5 dovetail
slot bottom in accordance with the requirements of ASB CF6-80A S/B
72-A0719, Revision 5, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
Spool Disposition
(4) If inspection findings equal or exceed the reject limits
established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October
2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2,
2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2,
2002; replace spool before further flight.
CF6-80C2 13-Inch Billet Spools
(i) For CF6 HPCR stage 3-9 spool, P/N's 1781M52P01,
1854M95P02,1781M52P02, 1854M95P05 and 9380M28P05, do the following:
Initial Inspection
(1) If the spool has not already been inspected using one of the
ASB's or SB's listed in Column A of the following Table 9; OR a
combination of one procedure from Column B and one from Column C; OR
a combination of one procedure from Column D and one from Column E,
inspect hub and bore in accordance with ASB CF6-80C2 S/B 72-A0812,
Revision 4, dated October 2, 2002, and the following compliance
times:
Table 9
----------------------------------------------------------------------------------------------------------------
CF6-80C2 SB No. Procedures (70-32-XX) in standard practices manual GEK9250
----------------------------------------------------------------------------------------------------------------
Column A Column B Column C Column D Column E
----------------------------------------------------------------------------------------------------------------
SB 72-418, Revision 2, May 14, 70-32-09, Revision 70-32-10, Revision 70-32-13, 70-32-14, TR 70-
1991. 71, dated October 71, dated October Temporary 26, dated August
1, 1995. 1, 1995. Revision (TR), 70- 26, 1996.
25, dated August
26, 1996.
SB 72-418, Revision 3, November 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
7, 1994. 72, dated 72, dated 72, dated 72, dated
November 15, 1996. November 15, 1996. November 15, 1996. November 15,
1996.
SB 72-418, Revision 4, December 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
22, 1995. 74, dated May 1, 74, dated May 1, 73, dated 73, dated
1998. 1998. November 1, 1997. November 1, 1997.
SB 72-758, Original, dated .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
November 7, 1994. 75, dated 75, dated 75, dated
December 15, 1998. December 15, 1998. December 15,
1998.
SB 72-758, Revision 1, dated .................. .................. 70-32-13, TR 70- 70-32-14, TR 70-
December 22, 1995. 41, dated 42, dated
February 10, 1999. February 10,
1999.
SB 72-812, Original, dated .................. .................. 70-32-13, Revision 70-32-14, Revision
November 6, 1995. 76, dated May 15, 76, dated May 15,
1999. 1999.
SB 72-812, Revision 1, dated .................. .................. 70-32-17, TR70-39, 70-322-18, TR 70-
january 30, 1998. dated December 40, dated
15, 1998. December 15,
1998.
ASB 72-A0812, Revision 2, dated .................. .................. 70-32-17, Revision 70-32-18, Revision
October 28, 1999. 76, dated May 15, 76, dated May 15,
1999. 1999.
ASB 72-A0812, Revision 3, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70-
June 6, 2001. 47, dated October 48, October 28,
28, 1999. 1999.
ASB CF6-80C2 S/B 72-A0812,
Revision 4, dated October 2,
2002..
----------------------------------------------------------------------------------------------------------------
(i) For spools with greater than 3,500 CSN on the effective date
of this AD, inspect before further flight.
(ii) For spools with 3,500 or fewer CSN on the effective date of
this AD, inspect at the first PPE after 1,000 CSN or before 3,500
CSN, whichever occurs earlier.
(2) For spools that have not been inspected using ASB CF6-80C2
S/B 72-A0848, Revision 8, dated October 2, 2002, or an earlier
revision of ASB 72-A0848 or SB 72-0848, inspect the web and hub-to-
web transition areas in accordance with the requirements of ASB CF6-
80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, at the
earliest of:
(i) The first PPE after 1000 CSN, or
(ii) The next required inspection to ASB CF6-80C2 S/B 72-A0812,
Revision 4, dated October 2, 2002, or
(iii) From July 29, 2001 through January 27, 2003, before 7,000
CSN, and after January 27, 2003, before 3,500 CSN.
(3) For spools that have not been inspected using ASB CF6-80C2
S/B 72-A0934, Revision 4, dated October 2, 2002, or an earlier
revision of ASB 72-A0934, inspect the stage 3-5 dovetail slot bottom
in accordance with the requirements of ASB CF6-80C2 S/B 72-A0934,
Revision 4, dated October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first HPCR exposure after 1,000 CSN, or
(iii) The next required inspection to ASB
CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002.
Repetitive Inspection
(4) For spools that have already been inspected using one of the
ASB's or SB's listed in Column A of Table 9; OR a
[[Page 77664]]
combination of one procedure from Column B AND one from Column C; OR
a combination of one procedure from Column D AND one from Column E,
reinspect the hub and bore in accordance with ASB 72-A812, Revision
4, dated October 2, 2002; the web and hub-to-web transition areas in
accordance with ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October
2, 2002; and the stage 3-5 dovetail slot bottoms in accordance with
ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002, at the
earliest of:
(i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or
(ii) From July 29, 2001, through January 27, 2003, before the
cycle limits of Table 4.
(iii) After January 27, 2003, before the cycle limits of Table
5.
Spool Disposition
(5) If inspection findings equal or exceed the reject limits
established by ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October
2, 2002, or ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2,
2002, or ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2,
2002; replace spool before further flight.
Spool Reinstallation Limit
(6) After the effective date of this AD, do not install any
engine that has an HPCR stage 3-9 spool, P/N's 1781M52P01,
1781M52P02, 1854M95P02, 1854M95P05, and 9380M28P05, installed where
the spool has 10,500 or more CSN.
CF6-80C2 9 and 10-Inch Billet Spools
(j) For CF6 HPCR stage 3-9 spool, P/Ns 1333M66G01, 1333M66G03,
1333M66G07, 1333M66G09, 1781M53G01,1781M53G02, 1781M53G03,
1781M53G04, 1781M53G06, 1781M53G07, 1781M53G08, 1781M53G09,
1854M95P01, 1854M95P03, 1854M95P04, 1854M95P06, and 1854M95P07, do
the following:
Initial Inspection
(1) If the spool has greater than 7,000 CSN on the effective
date of this AD and has not already been inspected using one of the
ASB's or SB's listed in Column A of Table 9; OR a combination of one
procedure from Column B AND one from Column C; OR a combination of
one procedure from Column D AND one from Column E, or if the spool
has not been inspected using ASB CF6-80C2 S/B 72-A0848, Revision 8,
dated October 2, 2002, or an earlier revision of ASB 72-A0848 or SB
72-0848, inspect the hub and bore in accordance with ASB CF6-80C2 S/
B 72-A0812, Revision 4, dated October 2, 2002; and the web and hub-
to-web transition areas in accordance with ASB CF6-80C2 S/B 72-
A0848, Revision 8, dated October 2, 2002, before further flight.
(2) If the spool has 7,000 or fewer CSN on the effective date of
this AD, and has not already been inspected using one of the ASB's
or SB's listed in Column A of Table 9; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, inspect the hub
and bore in accordance with ASB CF6-80C2 S/B 72-A0812, Revision 4,
dated October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 3,000 CSN, or
(iii) From July 29, 2001, through January 27, 2003, before 7,000
CSN, and after January 27, 2003, before 3,500 CSN.
(3) If the spool has 7,000 or fewer CSN on the effective date of
this AD, and has not already been inspected using ASB CF6-80C2 S/B
72-A0848, Revision 8, dated October 2, 2002, or an earlier revision
of ASB 72-A0848 or SB CF6-80C2 72-0848, inspect the web and the web
and hub-to-web transition areas in accordance with CF6-80C2 S/B 72-
A0848, Revision 8, dated October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 3,000 CSN, or
(iii) From July 29, 2001, through July 28, 2003, before 7,000
CSN and after July 28, 2003, before 3,500 CSN.
(4) For spools that have not been inspected using ASB CF6-80C2
S/B 72-A0934, Revision 4, dated October 2, 2002, or an earlier
revision of ASB 72-A0934, inspect the stage 3-5 dovetail slot bottom
in accordance with the requirements of ASB CF6-80C2 S/B 72-A0934,
Revision 4, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) Within 4,000 additional CIS after the effective date of
this AD.
Repetitive Inspection
(5) For spools that have already been inspected using one of the
ASB's or SB's listed in Column A of Table 9; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, reinspect the hub
and bore in accordance with the requirements of ASB CF6-80C2 S/B 72-
A0812, Revision 4, dated October 2, 2002, and the web and hub-to-web
transition areas in accordance with ASB CF6-80C2 S/B 72-A0848,
Revision 8, dated October 2, 2002, at the earlier of:
(i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or
(ii) From July 29, 2001, through January 27, 2003, before the
cycle limits of Table 6, and after January 27, 2003, before the
cycle limits of Table 5.
Spool Disposition
(6) If inspection findings equal or exceed the reject limits
established by ASB CF6-80C2 S/B 72-A0812, Revision 4, dated Revision
4, dated October 2, 2002, or ASB CF6-80C2 S/B 72-A0848, Revision 8,
dated October 2, 2002, or ASB CF6-80C2 S/B 72\A0934, Revision 4,
dated October 2, 2002; replace spool before further flight.
Spool Reinstallation Limit
(7) After the effective date of this AD, do not install any
engine that has an HPCR stage 3-9 spool, P/N's 1333M66G01,
1333M66G03, 1333M66G07, 1333M66G09, 1781M53G01, 1781M53G02,
1781M53G03, 1781M53G04, 1781M53G06, 1781M53G07, 1781M53G08,
1781M53G09, 1854M95P01, 1854M95P03, 1854M95P04, 1854M95P06 and
1854M95P07, installed where the spool has 10,500 or more CSN.
CF6-80C2 8-Inch Billet 2-Piece Spools
(k) For CF6 HPCR stage 3-9 spool, P/N's 1333M66G10, 1781M53G05,
1781M53G010, and 1854M95P08, do the following:
(1) If the spool has not already been inspected using one of the
ASB's or SB's listed in Column A of Table 9; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, inspect hub and
bore in accordance with the piece-part level inspection of ASB 72-
A0812, Revision 4, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(2) For spools that have not been inspected using ASB 72-A0848,
Revision 8, dated October 2, 2002, or an earlier revision of ASB 72-
A0848, or SB 72-0848, inspect the web and hub-to-web transition
areas in accordance with the requirements of ASB CF6-80C2 S/B 72-
A0848, Revision 8, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(3) For spools that have not been inspected using ASB CF6-80C2
S/B 72-A0934, Revision 3, dated October 2, 2002, or an earlier
revision of ASB 72-A0934, inspect the stage 3-5 dovetail slot bottom
in accordance with the requirements of ASB CF6-80C2 S/B 72-A0934,
Revision 4, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
Spool Disposition
(4) If inspection findings equal or exceed the reject limits
established by ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October
2, 2002, or ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2,
2002, or ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2,
2002; replace spool before further flight.
CF6-80E1 9&10-Inch Billet Spools
(l) For CF6 HPCR stage 3-9 spool, P/N's 1669M22G01, 1669M22G03,
1782M22G01 and 1782M22G02, do the following:
Initial Inspection
(1) If the spool has greater than 7,000 CSN and has not already
been inspected using one of the ASB's listed in Column A of the
following Table 10; OR a combination of one procedure from Column B
and one from Column C; OR a combination of one procedure from Column
D and one from Column E, OR if the spool has not been inspected
using ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002,
or an earlier revision of ASB 72-A0126, or SB 72-0126, inspect the
hub and bore in accordance with ASB CF6-80E1 S/B 72-A0135, Revision
3, dated October 2, 2002; and the web and hub-to-web transition
areas in accordance with ASB CF6-80E1 S/B 72-A0126, Revision 5,
dated October 2, 2002, before further flight.
[[Page 77665]]
Table 10
----------------------------------------------------------------------------------------------------------------
Procedures (70-32-XX) in standard practices manual GEK9250
CF6-80E1 SB No. Column A -------------------------------------------------------------------------------
Column B Column C Column D Column E
----------------------------------------------------------------------------------------------------------------
ASB 72-A0135, dated August 13, 70-32-09, Revision 70-32-10, Revision 70-32-13, 70-32-14, TR 70-
1998. 71, dated October 71, dated October Temporary 26, dated August
1, 1995. 1, 1995. Revision (TR), 70- 26, 1996.
25, dated August
26, 1996.
ASB 72-A0135, Revision 1, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
October 28, 1999. 71, dated 71, dated 72, dated 71, dated
November 15, 1996. November 15, 1996. November 15, 1996. November 15,
1996.
ASB 72-A0135, Revision 2, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
June 6, 2001. 74, dated May 1, 74, dated May 1, 73, dated 73, dated
1998. 1998. November 1, 1997. November 1, 1997.
ASB CF6-80E1 S/B 72-A0135, .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision
Revision 3, dated October 2, 75, dated 75, dated 75, dated
2002. December 15, 1998. December 15, 1998. December 15,
1998.
70-32-13, TR 70- 70-41, TR 70-42,
41, dated dated February
February 10, 1999. 10, 1999.
70-31-13, Revision 70-31-14, Revision
76, dated May 15, 76, dated May 15,
1999. 1999.
70-31-17, TR 70- 70-31-18, TR 70-
39, dated 40, dated
December 15, 1998. December 15,
1998.
70-31-17, Revision 70-31-18, Revision
76, dated May 15, 76, dated May 15,
1999. 1999.
70-31-17 TR 70-47, 70-31-18 TR 70-48,
dated October 28, dated October 28,
1999. 1999.
----------------------------------------------------------------------------------------------------------------
(2) If the spool has 7,000 or fewer CSN and has not already been
inspected using one of the ASB's listed in Column A of Table 10; OR
a combination of one procedure from Column B and one from Column C;
OR a combination of one procedure from Column D and one from Column
E, OR if the spool has not been inspected using ASB CF6-80E1 S/B 72-
A0126, Revision 5, dated October 2, 2002, or an earlier revision of
ASB 72-A0126, or SB 72-0126, inspect the hub and bore in accordance
with ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002;
and the web and hub-to-web transition areas in accordance with ASB
CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002, at the
earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 3,000 CSN, or
(iii) From July 29, 2001, through January 27, 2003, before 7,000
CSN, and after January 27, 2003, before 3,500 CSN.
(3) Spools not previously inspected using ASB CF6-80E1 S/B 72-
A0137, Revision 4, dated October 2, 2002, or an earlier revision of
ASB 72-0137, or SB 72-0137, inspect stage 3-5 dovetail slot bottoms
in accordance with the requirements of ASB CF6-80E1 S/B 72-A0137,
Revision 4, dated October 2, 2002, at the earliest of:
(i) The first PPE after 1,000 CSN, or
(ii) The first HPCR exposure after 1,000 CSN, or
(iii) The next required inspection to ASB
CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002.
Repetitive Inspection
(4) For spools that have already been inspected using one of the
ASB's listed in Column A of Table 10; OR a combination of one
procedure from Column B and one from Column C; OR a combination of
one procedure from Column D and one from Column E, inspect the hub
and bore in accordance with the requirements of ASB CF6-80E1 S/B 72-
A0135, Revision 3, dated October 2, 2002, the web and hub-to-web
transition areas in accordance with ASB CF6-80E1 S/B 72-A0126,
Revision 5, dated October 2, 2002, and the stage 3-5 dovetail slot
bottoms in accordance with ASB CF6-80E1 S/B 72-A0137, Revision 4,
dated October 2, 2002, at the earlier of:
(i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or
(ii) From July 29, 2001, through January 27, 2003, before the
cycle limits of Table 6, and after January 27, 2003, before the
cycle limits of Table 5.
Spool Disposition
(5) If inspection findings equal or exceed the reject limits
established by ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October
2, 2002; ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2,
2002; and ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2,
2002; replace spool before further flight.
Spool Reinstallation Limit
(6) After the effective date of this AD, do not install any
engine that has an HPCR stage 3-9 spool, P/N's 1669M22G01,
1669M22G03, 1782M22G01, and 1782M22G02, installed where the spool
has 10,500 or more CSN.
CF6-80E1 8-Inch Billet 2-Piece Spools
(m) For CF6 HPCR stage 3-9 spool, P/N 1782M22G04, do the
following:
(1) If the spool has not already been inspected using one of the
ASB's or SB's listed in Column A of the following Table 9; OR a
combination of one procedure from Column B and one from Column C; OR
a combination of one procedure from Column D and one from Column E,
inspect hub and bore in accordance with the piece-part level
inspection of ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October
2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(2) For spools that have not been inspected using ASB CF6-80E1
S/B 72-A0126, Revision 5, dated October 2, 2002, or an earlier
revision of ASB 72-A0126, or SB 72-0126, inspect the web and hub-to-
web transition areas in accordance with ASB CF6-80E1 S/B 72-A0126,
Revision 5, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
(3) For spools that have not been inspected using ASB CF6-80E1
S/B 72-A0137, Revision 4, dated October 2, 2002, or an earlier
revision of ASB 72-A0137, or SB 72-0137, inspect the stage 3-5
dovetail slot bottoms in accordance with ASB CF6-80E1 S/B 72-A0137,
Revision 4, dated October 2, 2002, at the earlier of:
(i) The first PPE after 1,000 CSN, or
(ii) The first ESV after 6,000 CSN.
Spool Disposition
(4) If inspection findings equal or exceed the reject limits
established by ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October
2, 2002; ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2,
2002; and ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2,
2002; replace spool before further flight.
Reporting Requirements
(n) Within five calendar days of inspection, report the results
of inspections that equal or exceed the reject criteria to: Engine
Certification Office, FAA, Engine and Propeller Directorate, 12 New
England Executive park, Burlington, MA 01803-5299; telephone (781)
238-7147; fax (781) 238-7199. Reporting requirements have been
approved by the Office of Management and
[[Page 77666]]
Budget and assigned OMB control number 2120-0056. Be sure to include
the following information:
(1) Part Number.
(2) Serial Number.
(3) Spool CSN.
(4) Spool CSLI.
(5) Date and location where inspection was done.
Definitions
(o) For the purpose of this AD, the following definitions apply:
(1) A module level exposure is a separation of the fan module
from the engine.
(2) An HPC rotor exposure is a HPC top or bottom case removal.
(3) A PPE is a disassembly and removal of the stage 3-9 spool
from the HPCR structure, regardless of any blades, locking lugs,
bolts or balance weights assembled to the spool.
(4) An ESV is the introduction of an engine into the shop where
the separation of a major engine flange will occur after the
effective date of this AD.
(5) The following maintenance actions, or any combination, are
not considered ESV's for requiring repeat inspections:
(i) Introduction of an engine into a shop solely for removal of
the compressor top or bottom case for airfoil maintenance or
variable stator vane bushing replacement.
(ii) Introduction of an engine into a shop solely for removal or
replacement of the Stage 1 Fan Disk.
(iii) Introduction of an engine into a shop solely for
replacement of the Turbine Rear Frame.
(iv) Introduction of an engine into a shop solely for
replacement of the Accessory and/or Transfer Gearboxes.
(v) Introduction of an engine into a shop solely for replacement
of the Fan Forward Case.
Alternative Methods of Compliance
(p) An alternative method of compliance or adjustment of the
compliance time that provides an acceptable level of safety may be
used if approved by the Manager, Engine Certification Office (ECO).
Operators must submit their request through an appropriate FAA
Principal Maintenance Inspector, who may add comments and then send
it to the Manager, ECO.
Note 2: Information concerning the existence of approved
alternative methods of compliance with this airworthiness directive,
if any, may be obtained from the ECO.
Special Flight Permits
(q) Special flight permits may be issued in accordance with
Sec. Sec. 21.197 and 21.199 of the Federal Aviation Regulations (14
CFR 21.197 and 21.199) to operate the airplane to a location where
the requirements of this AD can be done.
Documents That Have Been Incorporated By Reference
(r) The inspections must be done in accordance with the
following GE Aircraft Engines alert service bulletins (ASB's):
----------------------------------------------------------------------------------------------------------------
Document No. Pages Revision Date
----------------------------------------------------------------------------------------------------------------
ASB CF6-50 S/B 72-A1108..................... All 5 October 2, 2002.
Total pages: 7.
ASB CF6-50 S/B 72-A1131..................... All 4 Do.
Total pages: 43.
ASB CF6-50 S/B 72-A1157..................... All 4 Do.
Total pages: 38.
ASB CF6-80A S/B 72-A0678.................... All 5 Do.
Total pages: 7.
ASB CF6-80A S/B 72-A0691.................... All 5 Do.
Total pages: 43.
ASB CF6-80A S/B 72-A0719.................... All 5 Do.
Total pages: 38.
ASB CF6-80C2 S/B 72-A0812................... All 4 Do.
Total pages: 6.
ASB CF6-80C2 S/B 72-A0848................... All 8 Do.
Total pages: 43.
ASB CF6-80C2 S/B 72-A0934................... All 4 Do.
Total pages: 38.
ASB CF6-80E1 S/B 72-A0126................... All 5 Do.
Total pages: 44.
ASB CF6-80E1 S/B 72-A0135................... All 3 Do.
Total pages: 6.
ASB CF6-80E1 S/B 72-A0137................... All 4 Do.
Total pages: 38.
----------------------------------------------------------------------------------------------------------------
This incorporation by reference was approved by the Director of
the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR
part 51. Copies may be obtained from General Electric Company via
Lockheed Martin Technology Services, 10525 Chester Road, Suite C,
Cincinnati, Ohio 45215, telephone (513) 672-8400, fax (513) 672-
8422. Copies may be inspected at the FAA, New England Region, Office
of the Regional Counsel, 12 New England Executive Park, Burlington,
MA; or at the Office of the
Effective Date
(s) This amendment becomes effective on January 23, 2003.
Issued in Burlington, Massachusetts, on December 11, 2002.
Francis A. Favara,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 02-31754 Filed 12-18-02; 8:45 am]
BILLING CODE 4910-13-U