[Federal Register: June 5, 2007 (Volume 72, Number 107)]
[Rules and Regulations]
[Page 30968-30970]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr05jn07-6]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-27755; Directorate Identifier 2006-NM-289-AD;
Amendment 39-15081; AD 2007-12-03]
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
revising the Limitations section of the airplane flight manual to
include procedures for pulling the ``HYD PWR XFER'' circuit breaker in
the event of the loss of all hydraulic fluid in the No. 1 or No. 2
hydraulic system. This AD results from reports of fluid loss in the No.
2 hydraulic system, causing the power transfer unit to overspeed,
increasing the fluid flow within the No. 1 hydraulic system. We are
issuing this AD to prevent possible loss of both the No. 1 and No. 2
hydraulic systems, resulting in the potential loss of several functions
essential for safe flight and landing of the airplane.
DATES: This AD becomes effective July 10, 2007.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of July 10, 2007.
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: Ezra Sasson, Aerospace Engineer,
Systems and Flight Test Branch, ANE-172, 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:
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 April 4, 2007 (72 FR 16289). That NPRM proposed to
require revising the Limitations section of the airplane flight manual
(AFM) to include procedures for pulling the ``HYD PWR XFER'' circuit
breaker in the event of
[[Page 30969]]
the loss of all hydraulic fluid in the No. 1 or No. 2 hydraulic system.
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.
Clarification of Alternative Method of Compliance (AMOC) Paragraph
We have revised this action to clarify the appropriate procedure
for notifying the principal inspector before using any approved AMOC on
any airplane to which the AMOC applies.
Conclusion
We have carefully reviewed the available data and determined that
air safety and the public interest require adopting the AD with the
change described previously. We have determined that this change will
neither increase the economic burden on any operator nor increase the
scope of the AD.
Interim Action
We consider this AD interim action. The manufacturer is currently
developing a modification that will address the unsafe condition
identified in this AD. Once this modification is developed, approved,
and available, we might consider additional rulemaking.
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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Average Number of U.S.-
Action Work labor rate Parts Cost per registered Fleet cost
hours per hour airplane airplanes
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AFM revision..................... 1 $80 $0 $80 21 $1,680
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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 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
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 Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
2007-12-03 Bombardier, Inc. (Formerly de Havilland, Inc.): Amendment
39-15081. Docket No. FAA-2007-27755; Directorate Identifier 2006-NM-
289-AD.
Effective Date
(a) This AD becomes effective July 10, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model DHC-8-400, DHC-8-401,
and DHC-8-402 airplanes, certificated in any category; serial
numbers 4001 and 4003 and subsequent.
Unsafe Condition
(d) This AD results from reports of fluid loss in the No. 2
hydraulic system, causing the power transfer unit to overspeed,
increasing the fluid flow within the No. 1 hydraulic system. We are
issuing this AD to prevent possible loss of both the No. 1 and No. 2
hydraulic systems, resulting in the potential loss of several
functions essential for safe flight and landing 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.
Airplane Flight Manual (AFM) Revision
(f) Within 14 days after the effective date of this AD, revise
the Limitations section of the applicable AFM to include the
information in the applicable Bombardier temporary amendment
specified in Table 1 of this AD, as specified in the temporary
amendment. These temporary amendments introduce procedures for
pulling the ``HYD PWR XFER'' circuit breaker in the event of the
loss of all hydraulic fluid in the No. 1 or No. 2 hydraulic system.
Operate the airplane according to the limitations and procedures in
the applicable temporary amendment.
[[Page 30970]]
Table 1.--AFM Temporary Amendments
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Use
Bombardier To Bombardier Dash 8 Q400
For model-- temporary Issue-- Dated-- Airplane Flight Manual--
amendment--
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DHC-8-400 airplanes.......... 13 1 July 14, 2005.............. PSM 1-84-1A.
DHC-8-401 airplanes.......... 13 1 July 14, 2005.............. PSM 1-84-1A.
DHC-8-402 airplanes.......... 13 1 July 14, 2005.............. PSM 1-84-1A.
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Note 1: This may be done by inserting a copy of the applicable
temporary amendment into the applicable AFM. When the applicable
temporary amendment has been included in general revisions of the
AFM, the general revisions may be inserted into the AFM, provided
the relevant information in the general revisions is identical to
that in the temporary amendment.
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) To request a different method of compliance or a different
compliance time for this AD, follow the procedures in 14 CFR 39.19.
Before using any approved AMOC on any airplane to which the AMOC
applies, notify your appropriate principal inspector (PI) in the FAA
Flight Standards District Office (FSDO), or lacking a PI, your local
FSDO.
Related Information
(h) Canadian airworthiness directive CF-2006-08, dated April 26,
2006, also addresses the subject of this AD.
Material Incorporated by Reference
(i) You must use the temporary amendments specified in Table 2
of this AD, as applicable, 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 these
documents 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 FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington; 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/cfr/ibr-locations.html
.
Table 2.--Material Incorporated by Reference
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Bombardier temporary To Bombardier Dash 8 Q400 Airplane
amendment-- Issue-- Dated-- Flight Manual--
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13........................... 1 July 14, 2005............... Model 400 PSM 1-84-1A.
13........................... 1 July 14, 2005............... Model 401 PSM 1-84-1A.
13........................... 1 July 14, 2005............... Model 402 PSM 1-84-1A.
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Issued in Renton, Washington, on May 25, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E7-10678 Filed 6-4-07; 8:45 am]
BILLING CODE 4910-13-P