[Federal Register: June 7, 2005 (Volume 70, Number 108)]
[Rules and Regulations]
[Page 32986-32988]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr07jn05-4]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-20756; Directorate Identifier 2004-NM-52-AD;
Amendment 39-14112; AD 2005-11-10]
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 installation of check valves in
Numbers 1 and 2 hydraulic systems, removal of the filters from the
brake shuttle valves, and removal of the internal garter spring from
the brake shuttle valves. This AD results from two instances of brake
failure due to the loss of hydraulic fluid from both Numbers 1 and 2
hydraulic systems and one incident of brake failure due to filter
blockage in the shuttle valve. We are issuing this AD to prevent the
loss of hydraulic power from both hydraulic systems, which could lead
to reduced controllability of the airplane, and to prevent brake
failure, which could result in the loss of directional control on the
ground and consequent departure from the runway during landing.
DATES: This AD becomes effective July 12, 2005.
The incorporation by reference of certain publications listed in
the AD is approved by the Director of the Federal Register as of July
12, 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-2005-20756; the directorate
identifier for this docket is 2004-NM-52-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 30, 2005 (70 FR 16182), proposed to require
installation of check valves in Numbers 1 and 2 hydraulic systems,
removal of the filters from the brake shuttle valves, and removal of
the internal garter spring from the brake shuttle valves.
Comments
We provided the public the opportunity to participate in the
development of this AD. No comments have been submitted on the proposed
AD or on the determination of the cost to the public.
Explanation of Editorial Change
We have revised the Costs of Compliance section of this AD to
correct a mathematical error.
[[Page 32987]]
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
The following table provides the estimated costs for U.S. operators
to comply with this AD:
Estimated Costs
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Number of U.S.-
Action Work hours Average labor Parts Cost per registered Average fleet cost
rate per hour airplane airplanes
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Installation of check valves in Numbers 1 and 2 3 $65 $279-$405 $474-$600 179 $84,846-$107,400
hydraulic systems................................
Removal of filters and internal garter springs 3 65 252-1,360 447-1,555 179 80,013-278,345
from brake shuttle valves........................
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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):
2005-11-10 Bombardier, Inc. (Formerly de Havilland, Inc.): Amendment
39-14112. Docket No. FAA-2005-20756; Directorate Identifier 2004-NM-
52-AD.
Effective Date
(a) This AD becomes effective July 12, 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, certificated in any
category; serial numbers 003 through 593 inclusive.
Unsafe Condition
(d) This AD was prompted by two instances of brake failure due
to the loss of hydraulic fluid from both Numbers 1 and 2 hydraulic
systems and one incident of brake failure due to filter blockage in
the shuttle valve. We are issuing this AD to prevent the loss of
hydraulic power from both hydraulic systems, which could lead to
reduced controllability of the airplane, and to prevent brake
failure, which could result in the loss of directional control on
the ground and consequent departure from the runway during landing.
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 of Check Valves in Numbers 1 and 2 Hydraulic Systems
(f) Within 12 months after the effective date of this AD,
install check valves in the Numbers 1 and 2 hydraulic return systems
by incorporating Modsum 8Q101320 in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 8-29-36,
Revision ``B,'' dated January 6, 2003.
Removal of Filters and Internal Garter Spring From the Brake Shuttle
Valves
(g) Within 12 months after the effective date of this AD, modify
the brake shuttle valves, part number (P/N) 5084-1, by doing the
actions in either paragraph (g)(1) or (g)(2) of this AD. The
installation specified in paragraph (f) of this AD must be done
prior to doing any actions in accordance with Bombardier Service
Bulletin 8-29-37, Revision ``A,'' dated September 19, 2003 (Modsum
8Q101316), that are specified in paragraphs (g)(1) and (g)(2) of
this AD.
(1) Remove the filter assemblies by incorporating Modsum
8Q101422 in accordance with the Accomplishment Instructions of
Bombardier Service Bulletin 8-29-39, dated July 14, 2003; and within
40,000 flight hours after removing the filter assemblies, remove the
internal garter spring by incorporating Modsum 8Q101316 in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 8-29-37, Revision ``A,'' dated September 19, 2003.
(2) Remove the filter assemblies and internal garter spring by
incorporating Modsum 8Q101316 in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 8-29-37, Revision ``A,''
dated September 19, 2003.
Note 1: You can mix shuttle valves that have incorporated either
Modsum 8Q101316 or 8Q101422 on the same airplane.
[[Page 32988]]
Actions Accomplished According to Previous Issues of Service Bulletins
(h) Installations accomplished before the effective date of this
AD according to Bombardier Service Bulletin 8-29-36, dated December
6, 2002; and Revision ``A,'' dated December 12, 2002, are considered
acceptable for compliance with the corresponding installation
specified in paragraph (f) of this AD.
(i) Removals of the filters and internal garter springs
accomplished before the effective date of this AD according to
Bombardier Service Bulletin 8-29-37, dated July 15, 2003, are
considered acceptable for compliance with the corresponding removals
specified in paragraph (g) of this AD.
Alternative Methods of Compliance (AMOCs)
(j) 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.
Related Information
(k) Canadian airworthiness directive CF-2004-02, dated February
9, 2004, also addresses the subject of this AD.
Material Incorporated by Reference
(l) You must use the documents listed in Table 1 of this AD 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 these documents 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, go to 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
.
Table 1.--Material Incorporated by Reference
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Bombardier service
bulletin Revision level Date
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8-29-36............... B..................... January 6, 2003.
8-29-37............... A..................... September 19, 2003.
8-29-39............... Original.............. July 14, 2003.
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Issued in Renton, Washington, on May 26, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-11054 Filed 6-6-05; 8:45 am]
BILLING CODE 4910-13-P