Airworthiness Directives; The Boeing Company Airplanes, 24850-24852 [2015-10068]

Download as PDF 24850 Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Proposed Rules Industry Classification System (NAICS) code for manufacturing, or $4,000,000 in the case of any other contract opportunity; and (3) In the estimation of the contracting officer, the award can be made at a fair and reasonable price. (d) Sole source awards to WOSBs. For requirements in industries designated by SBA as substantially underrepresented pursuant to § 127.501, a contracting officer may issue a sole source award to a WOSB when the contacting officer determines that: (1) The WOSB is a responsible contractor with respect to performance of the requirement and the contracting officer does not have a reasonable expectation that 2 or more WOSBs will submit offers; (2) The anticipated award price of the contract (including options) will not exceed $6,500,000 in the case of a contract assigned a NAICS code for manufacturing, or $4,000,000 in the case of any other contract opportunity; and (3) In the estimation of the contracting officer, the award can be made at a fair and reasonable price. * * * * * ■ 6. Revise § 127.507 to read as follows: § 127.507 Are there EDWOSB and WOSB contracting opportunities at or below the simplified acquisition threshold? If the requirement is valued at or below the simplified acquisition threshold, the contracting may set aside the requirement or award the requirement on a sole source basis as set forth in § 127.503. ■ 7. Revise § 127.600 to read as follows: § 127.600 Who may protest the status of a concern as an EDWOSB or WOSB? mstockstill on DSK4VPTVN1PROD with PROPOSALS (a) For sole source procurements. SBA or the contracting officer may protest the proposed awardee’s EDWOSB or WOSB status. (b) For all other EDWOSB or WOSB requirements. An interested party may protest the apparent successful offeror’s EDWOSB or WOSB status. Dated: April 27, 2015. Maria Contreras-Sweet, Administrator. [FR Doc. 2015–10331 Filed 4–30–15; 8:45 am] BILLING CODE 8025–01–P VerDate Sep<11>2014 16:34 Apr 30, 2015 Jkt 235001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2015–0935; Directorate Identifier 2014–NM–243–AD] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747–100, 747–100B, 747–100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747– 400, 747–400D, 747–400F, 747SR, and 747SP series airplanes. This proposed AD was prompted by several reports of chafing of the wire bundles inside the electrical conduit of the forward and aft boost pumps of the numbers 1 and 4 main fuel tanks due to high vibration. These wire bundles can chafe through the wire sleeving into the insulation, exposing the wire conductors. This proposed AD would require replacing the wire bundles inside the electrical conduit of the forward and aft boost pumps of the numbers 1 and 4 main fuel tanks with new, improved wire bundles inserted into conduit liners. We are proposing this AD to prevent chafing of the wire bundles and subsequent arcing between the wiring and the electrical conduit creating an ignition source in the fuel tanks, which could result in a fire and consequent fuel tank explosion. DATES: We must receive comments on this proposed AD by June 15, 2015. 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 Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H–65, Seattle, WA 98124–2207; SUMMARY: PO 00000 Frm 00013 Fmt 4702 Sfmt 4702 phone 206–544–5000, extension 1; fax 206–766–5680; Internet https:// www.myboeingfleet.com. You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221. It is also available on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2015– 0935. Examining the AD Docket You may examine the AD docket on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2015– 0935; 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: Tung Tran, Aerospace Engineer, Propulsion Branch, ANM–140S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425–917–6505; fax: 425–917–6590; email: tung.tran@ 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– 2015–0935; Directorate Identifier 2014– NM–243–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 have received several reports of chafing of the wire bundles inside the E:\FR\FM\01MYP1.SGM 01MYP1 24851 Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Proposed Rules electrical conduit of the forward and aft boost pumps of the numbers 1 and 4 main fuel tanks due to high vibration. These wire bundles can chafe through the wire sleeving into the insulation, exposing the wire conductors. These conditions, if not prevented, could result in arcing between the wiring and the electrical conduit creating an ignition source in the fuel tanks, which could result in a fire and consequent fuel tank explosion. Related AD AD 2011–15–03, Amendment 39– 16750 (76 FR 41659, July 15, 2011), superseded AD 97–26–07, Amendment 39–10250 (62 FR 65352, December 12, 1997), and continues to require repetitive inspections to detect damage of the sleeving and wire bundles of the boost pumps of the numbers 1 and 4 main fuel tanks, and of the auxiliary tank jettison pumps (if installed); replacement of any damaged sleeving with new sleeving; and repair or replacement of any damaged wires with new wires. For airplanes on which any burned wires are found, AD 2011–15–03 also continues to require an inspection to detect damage of the conduit, and replacement of any damaged conduit with a serviceable conduit. AD 2011– 15–03 reduced the initial compliance time and repetitive inspection interval in AD 97–26–07. AD 2011–15–03 was prompted by fleet information indicating that the repetitive inspection interval in AD 97–26–07 was too long because excessive chafing of the sleeving continued to occur much earlier than expected between scheduled inspections. Accomplishing the replacement specified in this proposed AD would terminate the repetitive inspections required by paragraph (n) of AD 2011–15–03. Related Service Information Under 1 CFR Part 51 We reviewed Boeing Alert Service Bulletin 747–28A2306, dated October 2, 2014. The service information describes procedures for replacing the wire bundles of the electrical conduit inside the electrical conduit of the forward and aft boost pumps of the numbers 1 and 4 main fuel tanks. This service information is reasonably available at http://www.regulations.gov by searching for and locating Docket No. FAA–2015– 0935. Or see ADDRESSES for other ways to access this service information. 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 identified previously. Costs of Compliance We estimate that this proposed AD affects 176 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: ESTIMATED COSTS Labor cost Parts cost Cost per product Replacement ...................... mstockstill on DSK4VPTVN1PROD with PROPOSALS Action Up to 53 work-hours × $85 per hour = $4,505 ............ $4,600 Up to $9,105 ......... 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 VerDate Sep<11>2014 16:34 Apr 30, 2015 Jkt 235001 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. Cost on U.S. operators Up to $1,602,480. 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. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ The Boeing Company: Docket No. FAA– 2015–0935; Directorate Identifier 2014– NM–243–AD. (a) Comments Due Date We must receive comments by June 15, 2015. (b) Affected ADs List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. This AD affects AD 2011–15–03, Amendment 39–16750 (76 FR 41659, July 15, 2011). (c) Applicability The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PO 00000 Frm 00014 Fmt 4702 Sfmt 4702 This AD applies to The Boeing Company Model 747–100, 747–100B, 747–100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747–400, 747–400D, 747–400F, 747SR, and 747SP series airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin 747–28A2306, dated October 2, 2014. E:\FR\FM\01MYP1.SGM 01MYP1 24852 Federal Register / Vol. 80, No. 84 / Friday, May 1, 2015 / Proposed Rules (d) Subject Air Transport Association (ATA) of America Code 28, Fuel. (e) Unsafe Condition This AD was prompted by several reports of chafing of the wire bundles inside the electrical conduit of the forward and aft boost pumps of the numbers 1 and 4 main fuel tanks due to high vibration. These wire bundles can chafe through the wire sleeving into the insulation, exposing the wire conductors. We are issuing this AD to prevent chafing of the wire bundles and subsequent arcing between the wiring and the electrical conduit creating an ignition source in the fuel tanks, which could result in a fire and consequent fuel tank explosion. (f) Compliance Comply with this AD within the compliance times specified, unless already done. mstockstill on DSK4VPTVN1PROD with PROPOSALS (g) Replacement Within 60 months after the effective date of this AD: Replace the wire bundles inside the electrical conduit of the forward and aft boost pumps of the numbers 1 and 4 main fuel tanks with new, improved wire bundles inserted into conduit liners, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 747–28A2306, dated October 2, 2014. Accomplishing the replacement required by this paragraph terminates the repetitive inspections required by paragraph (n) of AD 2011–15–03, Amendment 39–16750 (76 FR 41659, July 15, 2011). (h) 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 paragraph (i)(1) of this AD. Information may be emailed to: 9-ANM-Seattle-ACO-AMOCRequests@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. (3) An AMOC that provides an acceptable level of safety may be used for any repair required by this AD if it is approved by the Boeing Commercial Airplanes Organization Designation Authorization (ODA) that has been authorized by the Manager, Seattle ACO, to make those findings. For a repair method to be approved, the repair must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (i) Related Information (1) For more information about this AD, contact Tung Tran, Aerospace Engineer, Propulsion Branch, ANM–140S, FAA, Seattle Aircraft Certification Office, 1601 Lind VerDate Sep<11>2014 16:34 Apr 30, 2015 Jkt 235001 Avenue SW., Renton, WA 98057–3356; phone: 425–917–6505; fax: 425–917–6590; email: tung.tran@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, WA 98124–2207; phone 206–544– 5000, extension 1; fax 206–766–5680; Internet https://www.myboeingfleet.com. You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221. Issued in Renton, Washington, on April 17, 2015. Victor Wicklund, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2015–10068 Filed 4–30–15; 8:45 am] BILLING CODE 4910–13–P • 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 General Electric Company, GE Aviation, Room 285, One Neumann Way, Cincinnati, OH, 45215; phone: 513- 552–3272; email: aviation.fleetsupport@ge.com. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. DEPARTMENT OF TRANSPORTATION Examining the AD Docket Federal Aviation Administration You may examine the AD docket on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2008– 0808; 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: Sanjana Murthy, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7750; fax: 781–238– 7199; email: sanjana.murthy@faa.gov. SUPPLEMENTARY INFORMATION: 14 CFR Part 39 [Docket No. FAA–2008–0808; Directorate Identifier 2008–NE–18–AD] RIN 2120–AA64 Airworthiness Directives; General Electric Company CT58 Turboshaft Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to supersede airworthiness directives (ADs) 2001–18– 06 and 2008–22–16, which apply to certain General Electric Company (GE) CT58 turboshaft engines. ADs 2001–18– 06 and 2008–22–16 require recalculating the lives of life-limited rotating parts using a Repetitive HeavyLift (RHL) multiplying factor and removal from service of parts that exceed the recalculated cyclic or hourly life limit. This proposed AD would consolidate ADs 2001–18–06 and 2008– 22–16, and further reduce the life capability of certain parts. We are proposing this AD to prevent failure of life-limited rotating parts, uncontained part release, damage to the engine, and damage to the aircraft. DATES: We must receive comments on this proposed AD by June 30, 2015. 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. SUMMARY: PO 00000 Frm 00015 Fmt 4702 Sfmt 4702 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–2008–0808; Directorate Identifier 2008–NE–18–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 E:\FR\FM\01MYP1.SGM 01MYP1

Agencies

[Federal Register Volume 80, Number 84 (Friday, May 1, 2015)]
[Proposed Rules]
[Pages 24850-24852]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-10068]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-0935; Directorate Identifier 2014-NM-243-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 747-100, 747-100B, 747-100B SUD, 747-
200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, 
and 747SP series airplanes. This proposed AD was prompted by several 
reports of chafing of the wire bundles inside the electrical conduit of 
the forward and aft boost pumps of the numbers 1 and 4 main fuel tanks 
due to high vibration. These wire bundles can chafe through the wire 
sleeving into the insulation, exposing the wire conductors. This 
proposed AD would require replacing the wire bundles inside the 
electrical conduit of the forward and aft boost pumps of the numbers 1 
and 4 main fuel tanks with new, improved wire bundles inserted into 
conduit liners. We are proposing this AD to prevent chafing of the wire 
bundles and subsequent arcing between the wiring and the electrical 
conduit creating an ignition source in the fuel tanks, which could 
result in a fire and consequent fuel tank explosion.

DATES: We must receive comments on this proposed AD by June 15, 2015.

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 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; phone 206-544-5000, 
extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com. 
You may view this referenced service information at the FAA, Transport 
Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information 
on the availability of this material at the FAA, call 425-227-1221. It 
is also available on the Internet at http://www.regulations.gov by 
searching for and locating Docket No. FAA-2015-0935.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015-
0935; 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: Tung Tran, Aerospace Engineer, 
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification 
Office, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6505; fax: 425-917-6590; email: tung.tran@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-2015-0935; 
Directorate Identifier 2014-NM-243-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 have received several reports of chafing of the wire bundles 
inside the

[[Page 24851]]

electrical conduit of the forward and aft boost pumps of the numbers 1 
and 4 main fuel tanks due to high vibration. These wire bundles can 
chafe through the wire sleeving into the insulation, exposing the wire 
conductors. These conditions, if not prevented, could result in arcing 
between the wiring and the electrical conduit creating an ignition 
source in the fuel tanks, which could result in a fire and consequent 
fuel tank explosion.

Related AD

    AD 2011-15-03, Amendment 39-16750 (76 FR 41659, July 15, 2011), 
superseded AD 97-26-07, Amendment 39-10250 (62 FR 65352, December 12, 
1997), and continues to require repetitive inspections to detect damage 
of the sleeving and wire bundles of the boost pumps of the numbers 1 
and 4 main fuel tanks, and of the auxiliary tank jettison pumps (if 
installed); replacement of any damaged sleeving with new sleeving; and 
repair or replacement of any damaged wires with new wires. For 
airplanes on which any burned wires are found, AD 2011-15-03 also 
continues to require an inspection to detect damage of the conduit, and 
replacement of any damaged conduit with a serviceable conduit. AD 2011-
15-03 reduced the initial compliance time and repetitive inspection 
interval in AD 97-26-07. AD 2011-15-03 was prompted by fleet 
information indicating that the repetitive inspection interval in AD 
97-26-07 was too long because excessive chafing of the sleeving 
continued to occur much earlier than expected between scheduled 
inspections. Accomplishing the replacement specified in this proposed 
AD would terminate the repetitive inspections required by paragraph (n) 
of AD 2011-15-03.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Alert Service Bulletin 747-28A2306, dated 
October 2, 2014. The service information describes procedures for 
replacing the wire bundles of the electrical conduit inside the 
electrical conduit of the forward and aft boost pumps of the numbers 1 
and 4 main fuel tanks. This service information is reasonably available 
at http://www.regulations.gov by searching for and locating Docket No. 
FAA-2015-0935. Or see ADDRESSES for other ways to access this service 
information.

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 identified previously.

Costs of Compliance

    We estimate that this proposed AD affects 176 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..........................  Up to 53 work[dash]hours x             $4,600   Up to $9,105....................  Up to $1,602,480.
                                        $85 per hour = $4,505.
--------------------------------------------------------------------------------------------------------------------------------------------------------

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

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):

The Boeing Company: Docket No. FAA-2015-0935; Directorate Identifier 
2014-NM-243-AD.

(a) Comments Due Date

    We must receive comments by June 15, 2015.

(b) Affected ADs

    This AD affects AD 2011-15-03, Amendment 39-16750 (76 FR 41659, 
July 15, 2011).

(c) Applicability

    This AD applies to The Boeing Company Model 747-100, 747-100B, 
747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-
400D, 747-400F, 747SR, and 747SP series airplanes, certificated in 
any category, as identified in Boeing Alert Service Bulletin 747-
28A2306, dated October 2, 2014.

[[Page 24852]]

(d) Subject

    Air Transport Association (ATA) of America Code 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by several reports of chafing of the wire 
bundles inside the electrical conduit of the forward and aft boost 
pumps of the numbers 1 and 4 main fuel tanks due to high vibration. 
These wire bundles can chafe through the wire sleeving into the 
insulation, exposing the wire conductors. We are issuing this AD to 
prevent chafing of the wire bundles and subsequent arcing between 
the wiring and the electrical conduit creating an ignition source in 
the fuel tanks, which could result in a fire and consequent fuel 
tank explosion.

(f) Compliance

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

(g) Replacement

    Within 60 months after the effective date of this AD: Replace 
the wire bundles inside the electrical conduit of the forward and 
aft boost pumps of the numbers 1 and 4 main fuel tanks with new, 
improved wire bundles inserted into conduit liners, in accordance 
with the Accomplishment Instructions of Boeing Alert Service 
Bulletin 747-28A2306, dated October 2, 2014. Accomplishing the 
replacement required by this paragraph terminates the repetitive 
inspections required by paragraph (n) of AD 2011-15-03, Amendment 
39-16750 (76 FR 41659, July 15, 2011).

(h) 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 paragraph (i)(1) 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.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair required by this AD if it is approved by the 
Boeing Commercial Airplanes Organization Designation Authorization 
(ODA) that has been authorized by the Manager, Seattle ACO, to make 
those findings. For a repair method to be approved, the repair must 
meet the certification basis of the airplane, and the approval must 
specifically refer to this AD.

(i) Related Information

    (1) For more information about this AD, contact Tung Tran, 
Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle 
Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 
98057-3356; phone: 425-917-6505; fax: 425-917-6590; email: 
tung.tran@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, WA 98124-2207; phone 206-544-5000, 
extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com. You may view this referenced service 
information at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue SW., Renton, WA. For information on the availability of this 
material at the FAA, call 425-227-1221.

    Issued in Renton, Washington, on April 17, 2015.
Victor Wicklund,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-10068 Filed 4-30-15; 8:45 am]
 BILLING CODE 4910-13-P