[Federal Register: April 7, 2006 (Volume 71, Number 67)]
[Rules and Regulations]
[Page 17694-17696]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr07ap06-2]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2006-23798; Directorate Identifier 2005-NM-162-AD;
Amendment 39-14543; AD 2006-07-16]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model DHC-8-400 Series
Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bombardier Model DHC-8-400 series airplanes. This AD requires
replacing all domed anchor nuts at all attachment locations of the
upper fuel access panels of the center wing in the wet bay location
with new nuts. This AD results from reported cases of corroded dome
anchor nuts at the attachment locations of the upper surface of the
fuel access panel of the center wing. We are issuing this AD to prevent
corrosion or perforation of domed anchor nuts, which could result in
arcing and ignition of fuel vapor in the center wing fuel tank during a
lightning strike and consequent explosion of the fuel tank.
DATES: This AD becomes effective May 12, 2006.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of May 12, 2006.
ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov
or in person at the Docket Management Facility, U.S.
Department of Transportation, 400 Seventh Street, SW., Nassif Building,
Room PL-401, Washington, DC.
Contact Bombardier, Inc., Bombardier Regional Aircraft Division,
123 Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada, for service
information identified in this AD.
FOR FURTHER INFORMATION CONTACT: George Duckett, Aerospace Engineer,
Airframe and Propulsion Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, suite 410, Westbury, New
York 11590; telephone (516) 228-7325; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Examining the Docket
You may examine the airworthiness directive (AD) docket on the
Internet at http://dms.dot.gov or in person at the Docket Management
Facility office between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The Docket Management Facility office
(telephone (800) 647-5227) is located on the plaza level of the Nassif
Building at the street address stated in the ADDRESSES section.
Discussion
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to include an AD that would apply to certain Bombardier
Model DHC-8-400 series airplanes. That NPRM was published in the
Federal Register on February 8, 2006 (71 FR 6411). That NPRM proposed
to require replacing all domed anchor nuts at all attachment locations
of the upper fuel access panels of the center wing in the wet bay
location with new nuts.
Comments
We provided the public the opportunity to participate in the
development of this AD. We received no comments on the NPRM or on the
determination of the cost to the public.
Change to NPRM
We have revised the telephone number in the FOR FURTHER INFORMATION
CONTACT paragraph.
[[Page 17695]]
Conclusion
We have carefully reviewed the available data, and determined that
air safety and the public interest require adopting the AD as proposed.
Costs of Compliance
This AD will affect about 20 airplanes of U.S. registry. The
required actions will take about 62 work hours per airplane, at an
average labor rate of $65 per work hour. Required parts will cost about
$300 per airplane. Based on these figures, the estimated cost of the AD
for U.S. operators is $86,600, or $4,330 per airplane.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII, Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
subtitle VII, part A, subpart III, section 44701, ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
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.
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 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 regulatory evaluation of the estimated costs to
comply with this AD and placed it in the AD docket. See the ADDRESSES
section for a location to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 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. The Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
2006-07-16 Bombardier, Inc. (Formerly de Havilland, Inc.): Amendment
39-14543. Docket No. FAA-2006-23798; Directorate Identifier 2005-NM-
162-AD.
Effective Date
(a) This AD becomes effective May 12, 2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model DHC-8-400 series
airplanes, certificated in any category; serial numbers 4001, and
4003 through 4115 inclusive.
Unsafe Condition
(d) This AD results from reported cases of corroded dome anchor
nuts at the attachment locations of the upper surface of the fuel
access panel of the center wing. We are issuing this AD to prevent
corrosion or perforation of domed anchor nuts, which could result in
arcing and ignition of fuel vapor in the center wing fuel tank
during a lightning strike and consequent explosion of the fuel tank.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Replacement With Corrosion Resistant Anchor Nuts
(f) At the applicable time in Table 1 of this AD, replace all
domed anchor nuts at all attachment locations of the upper fuel
access panels of the center wing in the wet bay location with new,
corrosion-resistant anchor nuts. Do all the actions in accordance
with the Accomplishment Instructions of Bombardier Service Bulletin
84-57-10, Revision ``A,'' dated March 14, 2005.
Table 1.--Compliance Time
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On which the
For airplanes having serial inspection(s) Do the
number(s)-- specified in-- replacement--
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(1) 4108 through 4115 inclusive. None.............. Within 48 months
after the date of
issuance of the
original standard
Canadian
airworthiness
certificate or
the date of
issuance of the
original Canadian
export
certificate of
airworthiness, or
within 2 months
after the
effective date of
this AD,
whichever occurs
later.
(2) 4001, and 4003 through 4107 Bombardier Service Within 24 months
inclusive. Bulletin 84-57- after those
11, dated inspections, or
February 25, within 2 months
2005; or Revision after the
`A,' dated March effective date of
9, 2005; have this AD,
been done before whichever occurs
the effective later.
date of this AD.
Bombardier Service Within 48 months
Bulletin 84-57- after that
12, dated March inspection, or
11, 2005, has within 2 months
been done before after the
the effective effective date of
date of this AD. this AD,
whichever occurs
later.
Bombardier Service Within 3 months
Bulletin 84-57- after the
11, dated effective date of
February 25, this AD.
2005, or Revision
`A,' dated March
9, 2005; or
Bombardier
Service Bulletin
84-57-12, dated
March 11, 2005;
has not been done
before the
effective date of
this AD.
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[[Page 17696]]
Alternative Methods of Compliance (AMOCs)
(g)(1) The Manager, New York Aircraft Certification Office, FAA,
has the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
Related Information
(h) Canadian airworthiness directive CF-2005-08R1, dated August
10, 2005, also addresses the subject of this AD.
Material Incorporated by Reference
(i) You must use Bombardier Service Bulletin 84-57-10, Revision
`A,' dated March 14, 2005, to perform the actions that are required
by this AD, unless the AD specifies otherwise. The Director of the
Federal Register approved the incorporation by reference of this
document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.
Contact Bombardier, Inc., Bombardier Regional Aircraft Division, 123
Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada, for a copy of
this service information. You may review copies at the Docket
Management Facility, U.S. Department of Transportation, 400 Seventh
Street, SW., Room PL-401, Nassif Building, Washington, DC; on the
Internet at http://dms.dot.gov; or at the National Archives and
Records Administration (NARA). For information on the availability
of this material at the NARA, call (202) 741-6030, or go to http://www.
archives. gov/federal -- register/ code --of -- federal --
regulations/ ibr-- locations. html.
Issued in Renton, Washington, on March 24, 2006.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 06-3196 Filed 4-6-06; 8:45 am]
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