[Federal Register Volume 75, Number 198 (Thursday, October 14, 2010)]
[Rules and Regulations]
[Pages 63064-63066]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-25599]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0676; Directorate Identifier 2010-NM-095-AD;
Amendment 39-16479; AD 2010-21-19]
RIN 2120-AA64
Airworthiness Directives; Learjet Inc. Model 45 Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD requires replacing aluminum fire
extinguisher discharge tubes with new, improved tubes; checking the
fire extinguisher container for certain serial numbers; replacing fire
extinguisher containers that have affected serial numbers; inspecting
the pressure indicator on certain fire extinguisher containers for
discrepancies; and performing corrective action if necessary. This AD
was prompted by a report of accidental discharge of a fire extinguisher
container and damage to an aluminum discharge tube. Investigation
revealed that following the discharge an inaccurate pressure
indication, due to the indicator dial being incorrectly staked, showed
that the container was fully charged. We are issuing this AD to prevent
inaccurate pressure readings and subsequent damage to the discharge
tubes during operation, which could result in failure of the fire
extinguisher system and an uncontained fire in an emergency situation.
DATES: This AD is effective November 18, 2010.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of November 18,
2010.
ADDRESSES: For service information identified in this AD, contact
Learjet, Inc., One Learjet Way, Wichita, Kansas 67209-2942; telephone
316-946-2000; fax 316-946-2220; e-mail [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.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this AD, the regulatory evaluation,
any comments received, and other information. The address for the
Docket Office (phone: 800-647-5527) is Document Management Facility,
U.S. Department of Transportation, Docket Operations, M-30, West
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: James Galstad, Aerospace Engineer,
Systems and Propulsion Branch, ACE-116W, FAA, Wichita Aircraft
Certification Office, 1801 Airport Road, Room 100, Mid-Continent
Airport, Wichita, Kansas 67209; telephone (316) 946-4135; fax (316)
946-4107; e-mail [email protected].
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an airworthiness directive (AD) that would apply to
the specified products. That NPRM was published in the Federal Register
on July 7, 2010 (75 FR 38941). That NPRM proposed to require replacing
aluminum fire extinguisher discharge tubes with new, improved tubes;
checking the fire extinguisher container for certain serial numbers;
replacing fire extinguisher containers that have affected serial
[[Page 63065]]
numbers; inspecting the pressure indicator on certain fire extinguisher
containers for discrepancies; and performing corrective action if
necessary.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM or on the determination of
the cost to the public.
Conclusion
We reviewed the relevant data and determined that air safety and
the public interest require adopting the AD as proposed.
Costs of Compliance
We estimate that this AD affects 322 airplanes of U.S. registry. We
also estimate that it will take 5 work-hours per product to comply with
this AD. The average labor rate is $85 per work-hour. Required parts
cost is minimal. Where the service information lists required parts
costs that are covered under warranty, we have assumed that there will
be no charge for these costs. 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 $136,850, or $425 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 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
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),
(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.
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):
2010-21-19 Learjet Inc: Amendment 39-16479; Docket No. FAA-2010-
0676; Directorate Identifier 2010-NM-095-AD.
Effective Date
(a) This AD is effective November 18, 2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Learjet Inc. Model 45 airplanes,
certificated in any category; as identified in Bombardier Service
Bulletins 40-26-05 and 45-26-9, both Revision 2, both dated May 4,
2009.
Subject
(d) Air Transport Association (ATA) of America Code 26: Fire
protection.
Unsafe Condition
(e) This AD results from a report of accidental discharge of a
fire extinguisher container and damage to an aluminum discharge
tube. Investigation revealed that following the discharge an
inaccurate pressure indication, due to the indicator dial being
incorrectly staked, showed that the container was fully charged. The
Federal Aviation Administration is issuing this AD to prevent
inaccurate pressure readings and subsequent damage to the discharge
tubes during operation, which could result in failure of the fire
extinguisher system and an uncontained fire in an emergency
situation.
Compliance
(f) 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, Check, Inspection, Corrective Action
(g) Within 12 months after the effective date of this AD:
Replace the aluminum fire extinguisher discharge tubes with new,
improved stainless steel tubes; check the fire extinguisher
container for any serial number specified in Table 1 of Bombardier
Service Bulletin 40-26-05 or 45-26-9, both Revision 2, both dated
May 4, 2009, as applicable; replace any containers that have
affected serial numbers, do a weight check of all containers,
including the replacement container, if applicable; and inspect the
pressure indicator on the containers for discrepancies; by doing all
applicable actions in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 40-26-05 or 45-26-9,
both Revision 2, both dated May 4, 2009; as applicable. If any
discrepancy is found, replace the container before further flight in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 40-26-05 or 45-26-9, both Revision 2, both dated
May 4, 2009; as applicable.
(h) Actions done before the effective date of this AD in
accordance with the applicable service information listed in Table 1
of this AD are acceptable for compliance with the corresponding
requirements in paragraph (g) of this AD.
Table 1--Credit for Actions Accomplished in Accordance With Previous Service Information
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Bombardier
Affected Serial Numbers-- Service Revision-- Dated--
Bulletin--
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For Model 45 airplanes having 40-26-05 Basic Issue.................. November 24, 2008.
serial numbers 2001 through
2114, inclusive.
For Model 45 airplanes having 40-26-05 1............................ December 22, 2008.
serial numbers 2001 through
2114, inclusive.
For Model 45 airplanes having 45-26-9 Basic Issue.................. November 24, 2008.
serial numbers 006 through 383,
inclusive.
[[Page 63066]]
For Model 45 airplanes having 45-26-9 1............................ December 22, 2008.
serial numbers 006 through 383,
inclusive.
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Alternative Methods of Compliance (AMOCs)
(i)(1) The Manager, Wichita Aircraft Certification Office (ACO),
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 manager of the ACO, send it to the
attention of the person identified in the Related Information
section of this AD.
(2) Before using any approved AMOC, notify your Principal
Maintenance Inspector or Principal Avionics Inspector, as
appropriate, or lacking a principal inspector, your local Flight
Standards District Office.
Related Information
(j) For more information about this AD, contact James Galstad,
Aerospace Engineer, Systems and Propulsion Branch, ACE-116W, FAA,
Wichita Aircraft Certification Office, 1801 Airport Road, Room 100,
Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 946-
4135; fax (316) 946-4107; e-mail [email protected].
Material Incorporated by Reference
(k) You must use the service information contained in Table 2 of
this AD, as applicable, to do the actions required by this AD,
unless the AD specifies otherwise.
Table 2--Material Incorporated by Reference
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Document Revision Date
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Bombardier Service Bulletin 40-26- 2 May 4, 2009.
05.
Bombardier Service Bulletin 45-26- 2 May 4, 2009.
9.
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(1) The Director of the Federal Register approved the
incorporation by reference of the service information contained in
Table 2 of this AD under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact
Learjet, Inc., One Learjet Way, Wichita, Kansas 67209-2942;
telephone 316-946-2000; fax 316-946-2220; e-mail
[email protected]; Internet http://www.bombardier.com.
(3) You may review copies of the 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.
(4) You may also review copies of the service information that
is incorporated by reference at the National Archives and Records
Administration (NARA). For information on the availability of this
material at an NARA facility, 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 October 5, 2010.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-25599 Filed 10-13-10; 8:45 am]
BILLING CODE 4910-13-P