[Federal Register: May 5, 2004 (Volume 69, Number 87)]
[Rules and Regulations]
[Page 24941-24944]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr05my04-7]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 95-CE-46-AD; Amendment 39-13596; AD 2004-09-07]
RIN 2120-AA64
Airworthiness Directives; Raytheon Aircraft Company Model 1900,
1900C, 1900C (C-12J), and 1900D Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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[[Page 24942]]
SUMMARY: The FAA adopts a new airworthiness directive (AD) for certain
Raytheon Aircraft Company (Raytheon) Model 1900, 1900C, 1900C (C-12J),
and 1900D airplanes that do not have canted bulkhead Kit No. 129-4005-1
S incorporated. This AD requires you to repetitively inspect the canted
bulkhead located at Fuselage Station (FS) 588.10 for cracks and
incorporate canted bulkhead Repair Kit No. 129-4005-1 S anytime cracks
are found. When Kit No. 129-4005-1 S is incorporated, the repetitive
inspection requirement in this AD is terminated and no further action
is required. This AD is the result of numerous reports of multi-site
cracks occurring in the canted bulkhead at FS 588.10. We are issuing
this AD to detect and correct cracks in the canted bulkhead. These
cracks could result in failure of the bulkhead. Failure of the canted
bulkhead could lead to loss of rudder and elevator control, which could
result in loss of control of the airplane.
DATES: This AD becomes effective on June 14, 2004.
As of June 14, 2004, the Director of the Federal Register approved
the incorporation by reference of certain publications listed in the
regulation.
ADDRESSES: You may get the service information identified in this AD
from Raytheon Aircraft Company, 9709 E. Central, Wichita, Kansas 67201-
0085; telephone: (800) 429-5372 or (316) 676-3140.You may view the AD
docket at FAA, Central Region, Office of the Regional Counsel,
Attention: Rules Docket No. 95-CE-46-AD, 901 Locust, Room 506, Kansas
City, Missouri 64106. Office hours are 8 a.m. to 4 p.m., Monday through
Friday, except Federal holidays.
FOR FURTHER INFORMATION CONTACT: Steven E. Potter, Aerospace Engineer,
Wichita Aircraft Certification Office (ACO), FAA, 1801 Airport Road,
Wichita, Kansas 67209; telephone: (316) 946-4124; facsimile: (316) 946-
4407.
SUPPLEMENTARY INFORMATION:
Discussion
What events have caused this AD? We have received numerous reports
of multi-site cracks in the canted bulkhead at Fuselage Station (FS)
558.10 on Raytheon 1900 Series airplanes. Cracks were found at the
outer flange radius, the outer flange stringer cutouts, and at the
flight control system support brackets of the canted bulkhead.
Has FAA taken any action to this point? We issued a proposal to
amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to
include an AD that would apply to certain Raytheon Aircraft Company
Model 1900, 1900C, 1900C (C-12J), and 1900D airplanes that do not have
canted bulkhead Kit No. 129-4005-1 S incorporated. This proposal was
published in the Federal Register as a supplemental notice of proposed
rulemaking (NPRM) on November 18, 2003 (68 FR 64996). The supplemental
NPRM was proposed to require you to:
--Repetitively inspect the canted bulkhead located at FS 588.10 for
cracks; and
--Incorporate canted bulkhead Repair Kit No. 129-4005-1 S if any cracks
are found and as a terminating action for the repetitive inspection
requirement. When Kit No. 129-4005-1 S is incorporated, no further
action is required.
What is the potential impact if FAA took no action? This condition,
if not detected and corrected, could prevent the bulkhead from carrying
its limit and ultimate design load because of cracks in the canted
bulkhead. Failure of the bulkhead could affect the rudder cable tension
and result in loss of elevator and rudder control, which could result
in loss of control of the airplane.
Comments
Was the public invited to comment? We provided the public the
opportunity to participate in developing this AD. We received no
comments on the proposal or on the determination of the cost to the
public.
Conclusion
What is FAA's final determination on this issue? We have carefully
reviewed the available data and determined that air safety and the
public interest require adopting the AD as proposed except for minor
editorial corrections. We have determined that these minor corrections:
--Are consistent with the intent that was proposed in the NPRM for
correcting the unsafe condition; and
--Do not add any additional burden upon the public than was already
proposed in the NPRM.
Changes to 14 CFR Part 39--Effect on the AD
How does the revision to 14 CFR part 39 affect this AD? On July 10,
2002, the FAA published a new version of 14 CFR part 39 (67 FR 47997,
July 22, 2002), which governs the FAA's AD system. This regulation now
includes material that relates to altered products, special flight
permits, and alternative methods of compliance. This material
previously was included in each individual AD. Since this material is
included in 14 CFR part 39, we will not include it in future AD
actions.
Costs of Compliance
How many airplanes does this AD impact? We estimate that this AD
affects 364 airplanes in the U.S. registry.
What is the cost impact of this AD on owners/operators of the
affected airplanes? We estimate the following costs to accomplish the
inspection:
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Total cost per
Labor cost Parts cost airplane Total cost on U.S. operators
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2 workhours x $65 per hour = Not applicable... $130 $130 x 364 = $47,320.
$130.
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We estimate the following costs to accomplish any necessary
modification that will be required based on the results of the
inspection(s). We have no way of determining the number of airplanes
that may need this modification:
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Labor cost Parts cost Total cost per airplane
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80 workhours x $65 per hour = $5,200.... $718 $5,200 + $718 = $5,918.
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[[Page 24943]]
Regulatory Findings
Will this AD impact various entities? We have determined that this
AD will not have federalism implications under Executive Order 13132.
This AD will 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.
Will this AD involve a significant rule or regulatory action? For
the reasons discussed above, I certify that this AD:
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.
We prepared a summary of the costs to comply with this AD and
placed it in the AD Docket. You may get a copy of this summary by
sending a request to us at the address listed under ADDRESSES. Include
``AD Docket No. 95-CE-46-AD'' in your request.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
Accordingly, under 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
0
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]
0
2. FAA amends Sec. 39.13 by adding a new AD to read as follows:
2004-09-07 Raytheon Aircraft Company: Amendment 39-13596; Docket No.
95-CE-46-AD.
When Does This AD Become Effective?
(a) This AD becomes effective on June 14, 2004.
What Other ADs Are Affected by This Action?
(b) None.
What Airplanes Are Affected by This AD?
(c) This AD affects the following airplane models and serial
numbers that:
(1) do not have canted bulkhead Kit No. 129-4005-1 incorporated;
and
(2) are certificated in any category:
------------------------------------------------------------------------
Model Serial Nos.
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1900......................... UA-1 through UA-3.
1900C........................ UB-1 through UB-74 and UC-1 through UC-
174.
1900C (C12J)................. UD-1 through UD-6.
1900D........................ UE-1 through UE-113.
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What Is the Unsafe Condition Presented in This AD?
(d) This AD is the result of numerous reports of multi-site
cracks occurring in the canted bulkhead at FS 588.10. We are issuing
this AD to detect and correct cracks in the canted bulkhead, which
could result in failure of the bulkhead. Failure of the canted
bulkhead could lead to loss of rudder and elevator control, which
could result in loss of control of the airplane.
What Must I Do To Address This Problem?
(e) To address this problem, you must do the following:
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Actions Compliance Procedures
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(1) Inspect the canted bulkhead Initially inspect Follow Raytheon
at Fuselage Station (FS) 588.10 at whichever Aircraft Company
for fatigue cracks. occurs later, Mandatory Service
unless already Bulletin SB 53-
done: Upon the 2564, Revision 2,
accumulation of Revised: July,
5,000 hours time- 2003.
in-service (TIS)
or within the
next 600 hours
TIS after June
14, 2004 (the
effective date of
this AD). If no
cracks are found,
repetitively
inspect
thereafter at
intervals not to
exceed 600 hours
TIS until Kit No.
129-4005-1 S is
incorporated.
When Kit No. 129-
4005-1 S is
incorporated, no
further action is
required.
(2) If cracks exist or are found Before further Follow Raytheon
during any inspection required flight after the Aircraft Company
in paragraph (e)(1) of this AD, inspection in Mandatory Service
Kit No. 129-4005-1 S must be which the cracks Bulletin SB 53-
incorporated. are found or 2564, Revision 2,
known to exist. Revised: July,
2003.
(3) Incorporating Kit No. 129- Kit No. 129-4005-1 Follow Raytheon
4005-1 S is the terminating S can be Aircraft Company
action for the repetitive incorporated at Mandatory Service
inspection requirements any time. When Bulletin SB 53-
specified in paragraph (e)(1) incorporated, no 2564, Revision 2,
of this AD. further action is Revised: July,
required. 2003.
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May I Request an Alternative Method of Compliance?
(f) You may request a different method of compliance or a
different compliance time for this AD by following the procedures in
14 CFR 39.19. Unless FAA authorizes otherwise, send your request to
your principal inspector. The principal inspector may add comments
and will send your request to the Manager, Wichita Aircraft
Certification Office (ACO), FAA. For information on any already
approved alternative methods of compliance, contact Steven E.
Potter, Aerospace Engineer, Wichita ACO, FAA, 1801 Airport Road,
Wichita, Kansas 67209; telephone: (316) 946-4124; facsimile: (316)
946-4407.
Does This AD Incorporate Any Material by Reference?
(g) You must do the actions required by this AD following the
instructions in Raytheon Aircraft Company Mandatory Service Bulletin
SB 53-2564, Revision 2, Revised: July, 2003. The Director of the
Federal Register approved the incorporation by reference of this
service bulletin in
[[Page 24944]]
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. You may get a
copy from Raytheon Aircraft Company, 9709 E. Central, Wichita,
Kansas 67201-0085; telephone: (800) 429-5372 or (316) 676-3140. You
may review copies at FAA, Central Region, Office of the Regional
Counsel, 901 Locust, Room 506, Kansas City, Missouri 64106; or at
The National Archives and Records Administration (NARA). For
information on the availability of this material at NARA, call 202-
741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
.
Issued in Kansas City, Missouri, on April 21, 2004.
Dorenda D. Baker,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 04-9898 Filed 5-4-04; 8:45 am]
BILLING CODE 4910-13-P