[Federal Register Volume 77, Number 196 (Wednesday, October 10, 2012)]
[Rules and Regulations]
[Pages 61511-61513]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2012-24523]
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Rules and Regulations
Federal Register
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Federal Register / Vol. 77, No. 196 / Wednesday, October 10, 2012 /
Rules and Regulations
[[Page 61511]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2012-0588; Directorate Identifier 2012-NM-017-AD;
Amendment 39-17210; AD 2012-20-04]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted
by reports of chafing between the wire harness along the wing leading
edge and the inboard end rib of the wing leading edge due to
insufficient clearance. This AD requires inspecting the wire harness
along the leading edge for chafing damage, and repair if necessary; and
relocating and installing new anchor nuts. We are issuing this AD to
detect and correct chafing damage to the wire harness along the wing
leading edge, which if not corrected, could lead to the loss of the
airframe de-icing system, and could become a possible ignition source
causing fire.
DATES: This AD becomes effective November 14, 2012.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of November 14,
2012.
ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov or in person at the U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC.
FOR FURTHER INFORMATION CONTACT: Assata Dessaline, Aerospace Engineer,
Avionics and Flight Test Branch, ANE-172, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
New York 11590; telephone (516) 228-7301; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM was published in the Federal Register on June 5, 2012 (77 FR
33125). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
There have been several in-service reports of chafing between
the wire harness along the wing leading edge and the wing leading
edge inboard end rib. The chafing condition was found to be caused
by insufficient clearance between the wire harness and the
structure. Chafing and damage to this wire harness could lead to the
loss of the airframe de-icing system, and could be a possible
ignition source causing fire and the subsequent loss of the
aeroplane.
This [Transport Canada Civil Aviation] Airworthiness Directive
(AD) mandates [a detailed] inspection of the wire harness along the
leading edge [for chafing damage, and repair if necessary] and the
relocation [and installation of new] anchor nut[s].
You may obtain further information by examining the MCAI in the AD
docket.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comment received.
Request To Include Latest Revision of Service Information
Horizon Air (Horizon) requested that we revise the proposed rule
(77 FR 33125, June 5, 2012) to reflect the latest revision of the
service information. Horizon pointed out that Bombardier Service
Bulletin 84-57-24, dated September 30, 2011, referenced in that NPRM
contained an error in a work step that needed to be corrected.
We agree. Bombardier has issued Service Bulletin 84-57-24, Revision
A, dated August 6, 2012. This service bulletin was revised to correct a
reference to a figure in a work step. We have changed this final rule
to reference Bombardier Service Bulletin 84-57-24, Revision A, dated
August 6, 2012, throughout. We have also added paragraph (i) of this
final rule to give credit for actions performed before the effective
date of this AD using Bombardier Service Bulletin 84-57-24, dated
September 30, 2011.
Conclusion
We reviewed the available data, including the comment received, and
determined that air safety and the public interest require adopting the
AD with the changes described previously and minor editorial changes.
We have determined that these changes:
Are consistent with the intent that was proposed in the
NPRM (77 FR 33125, June 5, 2012) for correcting the unsafe condition;
and
Do not add any additional burden upon the public than was
already proposed in the NPRM (77 FR 33125, June 5, 2012).
Costs of Compliance
We estimate that this AD will affect 83 products of U.S. registry.
We also estimate that it will take about 9 work-hours per product to
comply with the basic requirements of this AD. The average labor rate
is $85 per work-hour. Required parts will cost about $0 per product.
Where the service information lists required parts costs that are
covered under warranty, we have assumed that there will be no charge
for these parts. As we do not control warranty coverage for affected
parties, some parties may incur costs higher than estimated here. Based
on these figures, we estimate the cost of this AD to the U.S. operators
to be $63,495, or $765 per product.
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
[[Page 61512]]
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 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 the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979);
3. Will not affect intrastate aviation in Alaska; and
4. 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.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains the NPRM (77 FR 33125, June 5, 2012),
the regulatory evaluation, any comments received, and other
information. The street address for the Docket Operations office
(telephone (800) 647-5527) is in the ADDRESSES section. Comments will
be available in the AD docket shortly after receipt.
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 FAA amends Sec. 39.13 by adding the following new AD:
2012-20-04 Bombardier, Inc.: Amendment 39-17210. Docket No. FAA-
2012-0588; Directorate Identifier 2012-NM-017-AD.
(a) Effective Date
This airworthiness directive (AD) becomes effective November 14,
2012.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -
402 airplanes, certificated in any category, serial numbers 4001
through 4382 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 57: Wings.
(e) Reason
This AD was prompted by reports of chafing between the wire
harness along the wing leading edge and the inboard end rib of the
wing leading edge due to insufficient clearance. We are issuing this
AD to detect and correct chafing damage to the wire harness along
the wing leading edge, which if not corrected, could lead to the
loss of the airframe de-icing system, and could become a possible
ignition source causing fire.
(f) Compliance
You are responsible for having the actions required by this AD
performed within the compliance times specified, unless the actions
have already been done.
(g) Inspection and Repair
Within 3,000 flight hours or 18 months after the effective date
of this AD, whichever occurs first: Perform a detailed inspection
for chafing damage of the wire harness at the leading edge, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 84-57-24, Revision A, dated August 6, 2012. If any
chafing damage is found: Before further flight, repair in accordance
with the Accomplishment Instructions of Bombardier Service Bulletin
84-57-24, Revision A, dated August 6, 2012.
(h) Installation of New Anchor Nuts
Within 3,000 flight hours or 18 months after the effective date
of this AD, whichever occurs first: Relocate and install new anchor
nuts on the leading edge, in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 84-57-24, Revision A,
dated August 6, 2012.
(i) Credit for Previous Actions
This paragraph provides credit for actions required by
paragraphs (g) and (h) of this AD, if those actions were performed
before the effective date of this AD using Bombardier Service
Bulletin 84-57-24, dated September 30, 2011.
(j) Other FAA AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification Office (ACO), ANE-170, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or local Flight
Standards District Office, as appropriate. If sending information
directly to the ACO, send it to ATTN: Program Manager, Continuing
Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite
410, Westbury, New York 11590; telephone 516-228-7300; fax 516-794-
5531. Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office. The AMOC approval letter must specifically
reference this AD.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.
(k) Related Information
(1) Refer to MCAI Canadian Airworthiness Directive CF-2012-05,
dated January 13, 2012; and Bombardier Service Bulletin 84-57-24,
Revision A, dated August 6, 2012; for related information.
(2) For service information identified in this AD, contact
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000;
fax 416-375-4539; email [email protected]; Internet
http://www.bombardier.com. You may review copies of the referenced
service information at the FAA, Transport Airplane Directorate, 1601
Lind Avenue SW., Renton, Washington. For information on the
availability of this material at the FAA, call 425-227-1221.
(l) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless the AD specifies otherwise.
(i) Bombardier Service Bulletin 84-57-24, Revision A, dated
August 6, 2012.
(ii) Reserved.
(3) For service information identified in this AD, contact
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000;
fax 416-375-4539; email [email protected]; Internet
http://www.bombardier.com.
(4) You may review copies of the service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton,
[[Page 61513]]
WA. For information on the availability of this material at the FAA,
call 425-227-1221.
(5) You may view this service information that is incorporated
by reference 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/cfr/ibr-locations.html.
Issued in Renton, Washington, on September 27, 2012.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2012-24523 Filed 10-9-12; 8:45 am]
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