[Federal Register Volume 76, Number 230 (Wednesday, November 30, 2011)]
[Proposed Rules]
[Pages 74010-74012]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-30822]
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Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
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Federal Register / Vol. 76, No. 230 / Wednesday, November 30, 2011 /
Proposed Rules
[[Page 74010]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-1258; Directorate Identifier 2011-NM-184-AD]
RIN 2120-AA64
Airworthiness Directives; Learjet Inc. Model 60 Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain Learjet Inc. Model 60 airplanes. This proposed AD was prompted
by two incidents of swapped fire extinguishing wires. This proposed AD
would require inspecting the electrical leads routed to the fire
extinguishing containers for proper identification and missing labels,
and to ensure the electrical leads are connected to the correct squibs;
and corrective actions if necessary. We are proposing this AD to
prevent the extinguishing agent of the fire extinguishing container
from being delivered to the wrong engine in the event of an engine
fire, and a consequent uncontrolled fire.
DATES: We must receive comments on this proposed AD by January 17,
2012.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Learjet, Inc., One Learjet Way, Wichita, Kansas 67209-2942; telephone
(316) 946-2000; fax (316) 946-2220; email ac.ict@aero.bombardier.com;
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 proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Office (phone: (800) 647-5527) is in the
ADDRESSES section. Comments will be available in the AD docket shortly
after receipt.
FOR FURTHER INFORMATION CONTACT: James Galstad, Aerospace Engineer,
Mechanical Systems and Propulsion Branch, ACE-116W, FAA, Wichita
Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-
Continent Airport, Wichita, Kansas 67209; phone: (316) 946-4135; fax:
(316) 946-4107; email: james.galstad@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include ``Docket No. FAA-2011-1258;
Directorate Identifier 2011-NM-184-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD because of those comments.
We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
We received a report of two incidents of swapped left and right
fire extinguishing wires. Due to the locations of the forward and aft
squibs of the fire extinguishing containers, it is possible to reverse
the electrical wiring between the left and right squibs. Incorrect wire
labeling and improper wiring of the squibs could cause the
extinguishing agent of the fire extinguishing container to be delivered
to the wrong engine in the event of an engine fire. This condition, if
not corrected, could result in an uncontrolled fire.
Relevant Service Information
We reviewed Bombardier Service Bulletin 60-26-4, dated May 2, 2011.
The service information describes procedures for inspecting the
electrical leads routed to the fire extinguishing containers for proper
identification and missing labels, and to ensure the electrical leads
are connected to the correct squibs; and corrective actions if
necessary. The corrective actions include correcting wiring labels with
a permanent marker or replacing the labels with new heat shrink tubing
or heat rated tape and identifying them properly, and correcting the
wire routing.
FAA's Determination
We are proposing this AD because we evaluated all the relevant
information and determined the unsafe condition described previously is
likely to exist or develop in other products of the same type design.
Proposed AD Requirements
This proposed AD would require accomplishing the actions specified
in the service information described previously.
Costs of Compliance
We estimate that this proposed AD affects 232 airplanes of U.S.
registry.
We estimate the following costs to comply with this proposed AD:
[[Page 74011]]
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Inspection......................... 3 work-hours x $85 per hour 0 $255 $59,160
= $255.
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We estimate the following costs to do any necessary modification
that would be required based on the results of the proposed inspection.
We have no way of determining the number of aircraft that might need
this modification:
On-Condition Costs
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Cost per
Action Labor cost Parts cost product
----------------------------------------------------------------------------------------------------------------
Corrective actions......................... 1 work-hour x $85 per hour = $85... $8 $93
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According to the manufacturer, some of the costs of this proposed
AD may be covered under warranty, thereby reducing the cost impact on
affected individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
estimate.
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 determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:
(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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
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]
2. The FAA amends Sec. 39.13 by adding the following new
airworthiness directive (AD):
Learjet Inc.: Docket No. FAA-2011-1258; Directorate Identifier 2011-
NM-184-AD.
(a) Comments Due Date
We must receive comments by January 17, 2012.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Learjet Inc. Model 60 airplanes, certificated
in any category, serial numbers 60-002 through 60-366 inclusive.
(d) Subject
Joint Aircraft System Component (JASC)/Air Transport Association
(ATA) of America Code 2620, Extinguishing system.
(e) Unsafe Condition
This AD was prompted by two incidents of swapped fire
extinguishing wires, which could cause the extinguishing agent of
the fire extinguishing container to be delivered to the wrong engine
in the event of an engine fire, and a consequent uncontrolled fire.
We are issuing this AD to correct the unsafe condition on these
products.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspection and Corrective Actions
Within 300 flight hours after the effective date of this AD, or
at the next auxiliary power unit (APU) removal, whichever occurs
first: Inspect the electrical leads routed to the fire extinguishing
containers for proper identification and missing labels, and to
ensure the electrical leads are connected to the correct squibs, as
specified in Bombardier Service Bulletin 60-26-4, dated May 2, 2011.
Do the inspection in accordance with paragraph 3., ``Accomplishment
Instructions,'' of Bombardier Service Bulletin 60-26-4, dated May 2,
2011. If any misidentification is found, or if any label is missing,
or if the electrical leads are not connected to the correct squibs,
as specified in Bombardier Service Bulletin 60-26-4, dated May 2,
2011: Before further flight, do all applicable corrective actions,
in accordance with paragraph 3., ``Accomplishment Instructions,'' of
Bombardier Service Bulletin 60-26-4, dated May 2, 2011.
(h) Alternative Methods of Compliance (AMOCs)
(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 appropriate
principal inspector, or lacking a principal inspector, the manager
[[Page 74012]]
of the local flight standards district office/certificate holding
district office.
(i) Related Information
(1) For more information about this AD, contact James Galstad,
Aerospace Engineer, Mechanical Systems and Propulsion Branch, ACE-
116W, Wichita Aircraft Certification Office, FAA, 1801 Airport Road,
Room 100, Mid-Continent Airport, Wichita, Kansas 67209; phone: (316)
946-4135; fax: (316) 946-4107; email: james.galstad@faa.gov.
(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; email
ac.ict@aero.bombardier.com; 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.
Issued in Renton, Washington, on November 22, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2011-30822 Filed 11-29-11; 8:45 am]
BILLING CODE 4910-13-P