[Federal Register: May 17, 2005 (Volume 70, Number 94)]
[Rules and Regulations]
[Page 28186-28187]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr17my05-4]
[[Page 28186]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-20481; Directorate Identifier 2004-NM-183-AD;
Amendment 39-14085; AD 2005-10-08]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model DHC-8-102, -103, -106,
-201, -202, -301, -311, and -315 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-8-102, -103, -106, -201, -202, -301, -311,
and -315 airplanes. This AD requires operators to install torque tube
catchers on the control columns of the flight controls. This AD is
prompted by the discovery that a single malfunction of the torque tube
could result in both flight control columns being supported by only one
self-aligning bearing. We are issuing this AD to prevent the torque
tube from fouling against the underfloor control cables, which could
result in reduced controllability of the airplane.
DATES: This AD becomes effective June 21, 2005.
The incorporation by reference of a certain publication listed in
the AD is approved by the Director of the Federal Register as of June
21, 2005.
ADDRESSES: For service information identified in this AD, contact
Bombardier, Inc., Bombardier Regional Aircraft Division, 123 Garratt
Boulevard, Downsview, Ontario M3K 1Y5, Canada.
Docket: The AD docket contains the proposed AD, comments, and any
final disposition. You can examine the 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 U.S.
Department of Transportation, 400 Seventh Street, SW, room PL-401,
Washington, DC. This docket number is FAA-2005-20481; the directorate
identifier for this docket is 2004-NM-183-AD.
FOR FURTHER INFORMATION CONTACT: Ezra Sasson, 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) 228-7320; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39
with an AD for certain Bombardier Model DHC-8-102, -103, -106, -201, -
202, -301, -311, and -315 airplanes. That action, published in the
Federal Register on March 8, 2005 (70 FR 11168), proposed to require
operators to install torque tube catchers on the control columns of the
flight controls.
Comments
We provided the public the opportunity to participate in the
development of this AD. We have considered the comment that has been
submitted on the proposed AD. The commenter supports the proposed AD.
Conclusion
We have carefully reviewed the available data, including the
comment that has been submitted, and determined that air safety and the
public interest require adopting the AD as proposed.
Costs of Compliance
This AD will affect about 160 airplanes of U.S. registry. The
actions will take about 9 work hours per airplane, at an average labor
rate of $65 per work hour. Required parts will cost about $490 per
airplane. Based on these figures, the estimated cost of the AD for U.S.
operators is $172,000, or $1,075 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. 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
0
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 airworthiness
directive (AD):
2005-10-08 Bombardier, Inc. (Formerly de Havilland, Inc.): Amendment
39-14085. Docket No. FAA-2005-20481; Directorate Identifier 2004-NM-
183-AD.
Effective Date
(a) This AD becomes effective June 21, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model DHC-8-102, -103, -106, -
201, -202, -301, -311, and -315 airplanes, serial numbers 003
through 584 inclusive; certificated in any category.
Unsafe Condition
(d) This AD is prompted by the discovery that a single
malfunction of the torque tube could result in both flight control
columns being supported by only one self-aligning bearing. We are
issuing this AD to prevent the torque tube from fouling against the
[[Page 28187]]
underfloor control cables, which could result in reduced
controllability of the airplane.
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.
Installation
(f) Within 5,000 flight hours after the effective date of this
AD, install control column torque tube catchers on the control
columns of the flight controls by incorporating Modsum 8Q101338 in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 8-27-90, dated October 28, 2003.
Alternative Methods of Compliance
(g) The Manager, New York Aircraft Certification Office, FAA,
has the authority to approve alternative methods of compliance for
this AD if requested using the procedures found in 14 CFR 39.19.
Related Information
(h) Canadian airworthiness directive CF-2004-08, dated April 20,
2004, also addresses the subject of this AD.
Material Incorporated by Reference
(i) You must use Bombardier Service Bulletin 8-27-90, dated
October 28, 2003, to perform the actions that are required by this
AD, unless the AD specifies otherwise. The Director of the Federal
Register approves the incorporation by reference of this document in
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get copies of
the service information, contact Bombardier, Inc., Bombardier
Regional Aircraft Division, 123 Garratt Boulevard, Downsview,
Ontario M3K 1Y5, Canada. To view the AD docket, go to the Docket
Management Facility, U.S. Department of Transportation, 400 Seventh
Street SW., room PL-401, Nassif Building, Washington, DC. To review
copies of the service information, contact 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://
http://www.archives.gov/ federal--register/ code--of--federal--regulations/
ibr--locations.html.
Issued in Renton, Washington, on May 4, 2005.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-9467 Filed 5-16-05; 8:45 am]
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