Airworthiness Directives; The Boeing Company Airplanes, 6518-6520 [2012-2906]

Download as PDF 6518 Federal Register / Vol. 77, No. 26 / Wednesday, February 8, 2012 / Proposed Rules members of the public to comment on the proposed rule through EDA’s Web site. This issue has since been resolved. However, because of strong interest in this initiative, and to ensure stakeholders and the public have ample time and optimal access to comment on these changes, EDA is extending the deadline for submitting comments from February 6, 2012 to February 15, 2012. Comments should be submitted to EDA as described in ADDRESSES above. EDA encourages using the online feature of the agency’s Web site to submit comments and suggestions to EDA’s proposed regulatory changes. The Web site is easily accessible at https:// www.eda.gov/, and offers participants an opportunity to view the comments of others. EDA will consider all comments submitted electronically by 5 p.m. Eastern Time on February 15, 2012, or that are postmarked by that date, as referenced in DATES above. EDA will not accept public comments accompanied by a request that part or all of the material submitted by treated confidentiality for any reason; EDA will not consider such comments and will return them and their accompanying materials to the commenter. All public comments (including those faxed or emailed to the agency) submitted in response to this notice must be in writing and will be a matter of public record. Dated: February 2, 2012. Jamie Lipsey, Acting Deputy Chief Counsel, Economic Development Administration. [FR Doc. 2012–2743 Filed 2–7–12; 8:45 am] BILLING CODE 3510–24–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration area, which caused extensive damage to the flight deck. This proposed AD would require replacing the lowpressure oxygen hoses with nonconductive low-pressure oxygen hoses in the flight compartment. We are proposing this AD to prevent electrical current from passing through the lowpressure oxygen hose internal anticollapse spring, which can cause the low-pressure oxygen hose to melt or burn, and a consequent oxygen-fed fire in the flight compartment. DATES: We must receive comments on this proposed AD by March 26, 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 https://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 Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H–65, Seattle, Washington 98124– 2207; telephone (206) 544–5000, extension 1; fax (206) 766–5680; email me.boecom@boeing.com; Internet https://www.myboeingfleet.com. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA 98057– 3356. For information on the availability of this material at the FAA, call (425) 227–1221. 14 CFR Part 39 Examining the AD Docket [Docket No. FAA–2012–0104 Directorate Identifier 2011–NM–279–AD] You may examine the AD docket on the Internet at https:// 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: Susan Monroe, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM–150S, FAA, RIN 2120–AA64 Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). pmangrum on DSK3VPTVN1PROD with PROPOSALS-1 AGENCY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777–200, –200LR, –300, –300ER, and 777F series airplanes. This proposed AD was prompted by a report indicating that a fire originated near the first officer’s SUMMARY: VerDate Mar<15>2010 14:45 Feb 07, 2012 Jkt 226001 PO 00000 Frm 00015 Fmt 4702 Sfmt 4702 Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: (425) 917–6457; fax: (425) 917–6590; email: susan.l.monroe@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– 2012–0104 2011–NM–279–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 https:// 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 indicating that a fire originated near the first officer’s area, which caused extensive damage to the flight deck. The cause of this incident is unknown. One scenario of the causes being considered is that an electrical fault or short circuit resulted in electrical heating of the low-pressure oxygen hoses in the flight crew oxygen system. This condition, if not corrected, could cause electrical current to pass through the low-pressure oxygen hose internal anti-collapse spring, which can cause the low-pressure oxygen hose to melt or burn, and a consequent oxygenfed fire in the flight compartment. Relevant Service Information We reviewed Boeing Alert Service Bulletin 777–35A0027, dated December 15, 2011. The service information describes procedures for replacing the low-pressure oxygen hoses with nonconductive low-pressure oxygen hoses in the flight compartment. 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 E:\FR\FM\08FEP1.SGM 08FEP1 6519 Federal Register / Vol. 77, No. 26 / Wednesday, February 8, 2012 / Proposed Rules the service information described previously. Costs of Compliance We estimate that this proposed AD affects 169 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: ESTIMATED COSTS Action Labor cost Parts cost Cost per product Cost on U.S. operators Replacement ........................... 18 work-hours × $85 per hour = $1,530 ................................ $1,743 $3,273 $553,137 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. pmangrum on DSK3VPTVN1PROD with PROPOSALS-1 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. VerDate Mar<15>2010 14:45 Feb 07, 2012 Jkt 226001 The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: oxygen hoses in the flight compartment, in accordance with Boeing Alert Service Bulletin 777–35A0027, dated December 15, 2011. PART 39—AIRWORTHINESS DIRECTIVES As of the effective date of this AD, no person may install in the airplane flight compartment oxygen system on any airplane a low-pressure oxygen hose having part number 57034–81220, 57034–81320, or 57034–91100. 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): The Boeing Company: Docket No. FAA– 2012–0104; Directorate Identifier 2011– NM–279–AD. (a) Comments Due Date We must receive comments by March 26, 2012. (b) Affected ADs None. (c) Applicability This AD applies to The Boeing Company Model 777–200, –200LR, –300, –300ER, and 777F series airplanes; certificated in any category; as identified in Boeing Alert Service Bulletin 777–35A0027, dated December 15, 2011. (d) Subject Joint Aircraft System Component (JASC)/ Air Transport Association (ATA) of America Code 35; Oxygen. (e) Unsafe Condition This AD was prompted by a report indicating that a fire originated near the first officer’s area, which caused extensive damage to the flight deck. We are issuing this AD to prevent electrical current from passing through the low-pressure oxygen hose internal anti-collapse spring, which can cause the low-pressure oxygen hose to melt or burn, and a consequent oxygen-fed fire in the flight compartment. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Replacement Within 18 months after the effective date of this AD: Replace the low-pressure oxygen hoses with non-conductive low-pressure PO 00000 Frm 00016 Fmt 4702 Sfmt 4702 (h) Parts Installation (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, Seattle 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. Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov.] (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (j) Related Information (1) For more information about this AD, contact Susan Monroe, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM–150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: (425) 917– 6457; fax: (425) 917–6590; email: susan.l.monroe@faa.gov. (2) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H–65, Seattle, Washington 98124–2207; telephone (206) 544–5000, extension 1; fax (206) 766– 5680; email me.boecom@boeing.com; Internet https://www.myboeingfleet.com. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA 98057–3356. For information on the availability of this material at the FAA, call (425) 227–1221. E:\FR\FM\08FEP1.SGM 08FEP1 6520 Federal Register / Vol. 77, No. 26 / Wednesday, February 8, 2012 / Proposed Rules Issued in Renton, Washington, on January 25, 2012. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2012–2906 Filed 2–7–12; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2012–0106; Directorate Identifier 2011–NM–150–AD] RIN 2120–AA64 Airworthiness Directives; BAE SYSTEMS (OPERATIONS) LIMITED Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for all BAE SYSTEMS (OPERATIONS) LIMITED Model BAe 146 and Avro 146–RJ airplanes. This proposed AD was prompted by reports of baggage bay fire bottles that can be misassembled such that two squib electrical connectors can be cross-connected. This proposed AD would require a general visual inspection of certain baggage bay fire bottles for correct connection and for the length of the wiring loom, modifying the wiring loom to certain squib connectors, and corrective actions if necessary. We are proposing this AD to detect and correct excessive wiring loom length and improper connection of the squib connecters, which in conjunction with a fire in one of the baggage bays, could result in the fire extinguishing agent being discharged into a wrong compartment and consequent damage to the airplane. DATES: We must receive comments on this proposed AD by March 26, 2012. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://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: U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey pmangrum on DSK3VPTVN1PROD with PROPOSALS-1 SUMMARY: VerDate Mar<15>2010 14:45 Feb 07, 2012 Jkt 226001 Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact BAE SYSTEMS (OPERATIONS) LIMITED, Customer Information Department, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland, United Kingdom; telephone +44 1292 675207; fax +44 1292 675704; email RApublications@baesystems.com; Internet https://www.baesystems.com/ Businesses/RegionalAircraft/index.htm. 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 https:// www.regulations.gov; or in person at the Docket Operations office 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 Operations office (telephone (800) 647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA 1601 Lind Avenue SW., Renton, Washington 98057–3356; telephone (425) 227–1175; fax (425) 227–1149. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2012–0106; Directorate Identifier 2011–NM–150–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 based on those comments. We will post all comments we receive, without change, to https:// 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. PO 00000 Frm 00017 Fmt 4702 Sfmt 4702 Discussion The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2011–0065, dated April 7, 2011 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: The baggage bay fire bottles of certain BAe 146 and AVRO 146–RJ aeroplanes can be misassembled such that two squib electrical connectors can be cross-connected. This has been caused by an error in the baggage bay fire bottle Component Manufacturer Manual (CMM) and by excessive wiring loom length. This condition, if not corrected and in conjunction with a fire in one of the baggage bays, could result in the fire extinguishant to be discharged into a wrong compartment and consequent potential damage to the aircraft * * *. In addition to the CMM revision, to address this unsafe condition, BAE Systems developed modifications to reroute the baggage bay fire bottle wiring looms and prevent crossed electrical connections. For the reasons described above, this [EASA] AD requires the implementation of modifications HCM36250A and HCM36250B to affected aeroplanes. Required actions include general visual inspections of certain baggage bay fire bottles for correct connection and for the length of the wiring loom, modifying the wiring loom to certain squib connectors, and corrective action if necessary. Corrective actions include reconnecting the squibs connectors and modifying the loom to proper length. You may obtain further information by examining the MCAI in the AD docket. Relevant Service Information BAE SYSTEMS (Operations) Limited has issued Modification Service Bulletin SB.26–077–36250A.B, Revision 4, dated January 7, 2011. The actions described in this service information are intended to correct the unsafe condition identified in the MCAI. FAA’s Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to our bilateral agreement with the State of Design Authority, we have been notified of the unsafe condition described in the MCAI and service information referenced above. We are proposing this AD because we evaluated all pertinent information and determined an unsafe condition exists and is likely to exist or develop on other products of the same type design. E:\FR\FM\08FEP1.SGM 08FEP1

Agencies

[Federal Register Volume 77, Number 26 (Wednesday, February 8, 2012)]
[Proposed Rules]
[Pages 6518-6520]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-2906]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-0104 Directorate Identifier 2011-NM-279-AD]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain The Boeing Company Model 777-200, -200LR, -300, -300ER, and 
777F series airplanes. This proposed AD was prompted by a report 
indicating that a fire originated near the first officer's area, which 
caused extensive damage to the flight deck. This proposed AD would 
require replacing the low-pressure oxygen hoses with non-conductive 
low-pressure oxygen hoses in the flight compartment. We are proposing 
this AD to prevent electrical current from passing through the low-
pressure oxygen hose internal anti-collapse spring, which can cause the 
low-pressure oxygen hose to melt or burn, and a consequent oxygen-fed 
fire in the flight compartment.

DATES: We must receive comments on this proposed AD by March 26, 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 https://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 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 
(206) 544-5000, extension 1; fax (206) 766-5680; email 
me.boecom@boeing.com; Internet https://www.myboeingfleet.com. You may 
review copies of the referenced service information at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA 98057-
3356. 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 https://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: Susan Monroe, Aerospace Engineer, 
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle 
Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057-
3356; phone: (425) 917-6457; fax: (425) 917-6590; email: 
susan.l.monroe@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-2012-0104 2011-
NM-279-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 https://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 indicating that a fire originated near the 
first officer's area, which caused extensive damage to the flight deck. 
The cause of this incident is unknown. One scenario of the causes being 
considered is that an electrical fault or short circuit resulted in 
electrical heating of the low-pressure oxygen hoses in the flight crew 
oxygen system. This condition, if not corrected, could cause electrical 
current to pass through the low-pressure oxygen hose internal anti-
collapse spring, which can cause the low-pressure oxygen hose to melt 
or burn, and a consequent oxygen-fed fire in the flight compartment.

Relevant Service Information

    We reviewed Boeing Alert Service Bulletin 777-35A0027, dated 
December 15, 2011. The service information describes procedures for 
replacing the low-pressure oxygen hoses with non-conductive low-
pressure oxygen hoses in the flight compartment.

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

[[Page 6519]]

the service information described previously.

Costs of Compliance

    We estimate that this proposed AD affects 169 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
              Action                        Labor cost            Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Replacement.......................  18 work-hours x $85 per            $1,743           $3,273         $553,137
                                     hour = $1,530.
----------------------------------------------------------------------------------------------------------------

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):

The Boeing Company: Docket No. FAA-2012-0104; Directorate Identifier 
2011-NM-279-AD.

(a) Comments Due Date

    We must receive comments by March 26, 2012.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to The Boeing Company Model 777-200, -200LR, -
300, -300ER, and 777F series airplanes; certificated in any 
category; as identified in Boeing Alert Service Bulletin 777-
35A0027, dated December 15, 2011.

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code 35; Oxygen.

(e) Unsafe Condition

    This AD was prompted by a report indicating that a fire 
originated near the first officer's area, which caused extensive 
damage to the flight deck. We are issuing this AD to prevent 
electrical current from passing through the low-pressure oxygen hose 
internal anti-collapse spring, which can cause the low-pressure 
oxygen hose to melt or burn, and a consequent oxygen-fed fire in the 
flight compartment.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Replacement

    Within 18 months after the effective date of this AD: Replace 
the low-pressure oxygen hoses with non-conductive low-pressure 
oxygen hoses in the flight compartment, in accordance with Boeing 
Alert Service Bulletin 777-35A0027, dated December 15, 2011.

(h) Parts Installation

    As of the effective date of this AD, no person may install in 
the airplane flight compartment oxygen system on any airplane a low-
pressure oxygen hose having part number 57034-81220, 57034-81320, or 
57034-91100.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle 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. Information may be emailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.]
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.

(j) Related Information

    (1) For more information about this AD, contact Susan Monroe, 
Aerospace Engineer, Cabin Safety and Environmental Systems Branch, 
ANM-150S, FAA, Seattle Aircraft Certification Office, 1601 Lind 
Avenue SW., Renton, WA 98057-3356; phone: (425) 917-6457; fax: (425) 
917-6590; email: susan.l.monroe@faa.gov.
    (2) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 
(206) 544-5000, extension 1; fax (206) 766-5680; email 
me.boecom@boeing.com; Internet https://www.myboeingfleet.com. You 
may review copies of the referenced service information at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA 
98057-3356. For information on the availability of this material at 
the FAA, call (425) 227-1221.


[[Page 6520]]


    Issued in Renton, Washington, on January 25, 2012.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-2906 Filed 2-7-12; 8:45 am]
BILLING CODE 4910-13-P
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