Airworthiness Directives; The Boeing Company Airplanes, 61731-61734 [2012-24954]

Download as PDF 61731 Proposed Rules Federal Register Vol. 77, No. 197 Thursday, October 11, 2012 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. DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2012–1069; Directorate Identifier 2012–NM–044–AD] Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to supersede an existing airworthiness directive (AD) that applies to all The Boeing Company Model 727 airplanes. The existing AD currently requires repetitive inspections of the in-tank fuel boost pump wiring to detect chafing of the wire insulation, evidence of electrical arcing, or arcthrough of the conduit wall, and applicable corrective action; and installation of sleeving over the in-tank fuel boost pump wires. The existing AD also requires repetitive inspections for damage of a certain electrical wire and sleeve, and arcing damage of the conduit and signs of fuel leakage into the conduit; applicable investigative and corrective actions; and repetitive engine fuel suction feed operational tests. Since we issued that AD, we received a report of damage found to the sleeve, jacket, and insulation on an electrical wire during a repetitive inspection. This proposed AD would require replacement of the wire bundles for the wing and center fuel boost pumps with new, improved wire bundles, installation of convoluted liners, and related investigative and corrective actions if necessary. This proposed AD would also require replacement of the fuel quantity indicating system (FQIS) wires with new, improved wires; a low-frequency eddy current inspection for cracking; and repair if necessary. This proposed AD would also require revising the pmangrum on DSK3VPTVN1PROD with PROPOSALS-1 VerDate Mar<15>2010 14:04 Oct 10, 2012 Jkt 229001 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; telephone 206–544–5000, extension 1; fax 206–766–5680; 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. For information on the availability of this material at the FAA, call 425–227–1221. ADDRESSES: RIN 2120–AA64 SUMMARY: maintenance program to incorporate changes to the airworthiness limitations section. We are proposing this AD to detect and correct chafing of the fuel boost pump electrical wiring and leakage of fuel into the conduit, and to prevent electrical arcing between the wiring and the surrounding conduit, which could result in arc-through of the conduit, and consequent fire or explosion of the fuel tank. DATES: We must receive comments on this proposed AD by November 26, 2012. 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. PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 FOR FURTHER INFORMATION CONTACT: Rebel Nichols, Aerospace Engineer, Propulsion Branch, ANM–140S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425–917–6509; fax: 425–917–6590; email: rebel.nichols@ faa.gov. 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–2012–1069; Directorate Identifier 2012–NM–044–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 On May 1, 2007, we issued AD 2007– 11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007), for all The Boeing Company Model 727, 727C, 727–100, 727–100C, 727–200, and 727–200F series airplanes. That AD requires repetitive inspections of the in-tank fuel boost pump wiring to detect chafing of the wire insulation, evidence of electrical arcing, or arc-through of the conduit wall, and applicable corrective action; and installation of sleeving over the in-tank fuel boost pump wires as a method to protect the wiring from chafing. That AD also requires repetitive inspections for damage of the electrical wire and sleeve that run to the fuel boost pump through a conduit in the fuel tank, and arcing damage of the conduit and signs of fuel leakage into the conduit; applicable investigative and corrective actions; repetitive engine fuel suction feed operational tests; an engine fuel suction feed operational test; related investigative and corrective actions, as applicable; and sending E:\FR\FM\11OCP1.SGM 11OCP1 61732 Federal Register / Vol. 77, No. 197 / Thursday, October 11, 2012 / Proposed Rules inspection results and damaged parts to the manufacturer. Actions Since Existing AD (72 FR 28594, May 22, 2007) Was Issued In the preamble to AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007), the FAA indicated that the actions required by that AD were considered ‘‘interim action’’ and that further rulemaking action was being considered. The FAA now has determined that further rulemaking action is indeed necessary, and this proposed AD follows from that determination. Further, since we issued AD 2007– 11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007), we received a report of damage found to the sleeve, jacket, and insulation on an electrical wire during a repetitive inspection approximately 21,000 flight hours after installation of the sleeve. (The inspection interval in AD 2007–11–08 is 30,000 flight hours.) The sleeve and jacket were worn through, exposing the insulation on the electrical wire inside the jacket. The actions developed by the manufacturer eliminate the possibility of wiring damage during reinstallation following the repetitive inspections. pmangrum on DSK3VPTVN1PROD with PROPOSALS-1 Relevant Service Information We reviewed Boeing Alert Service Bulletin 727–28A0133, dated October 5, 2011. This service bulletin describes procedures for replacing wire bundles for the wing and center fuel boost pumps, installing convoluted liners, and related investigative and corrective actions. This service bulletin specifies that doing these actions eliminates the need for the inspections specified in Boeing Alert Service Bulletin 727– 28A0132, dated February 22, 2007 (which is referenced as the appropriate source of service information for inspections specified in AD 2007–11– 08, Amendment 39–15065 (72 FR 28594, May 22, 2007)). Replacing the wire bundles and installing the convoluted liners includes: • Installing new ground brackets, removing fuel boost pumps from the fuel boost pump housing, and removing wire bundles and sleeves. • Removing or stowing fuel boost pump wire bundles, installing new convoluted liners and new wire bundles in the fuel boost pump conduits. • Routing new wire bundles. VerDate Mar<15>2010 14:04 Oct 10, 2012 Jkt 229001 • Installing fuel boost pumps and making changes to the wire bundles. • Installing the ground stud assembly for wire bundles. Related investigative actions include testing the fuel tank conduits for leaks and testing the fuel boost pumps. Corrective actions include repairing or replacing the fuel tank conduit. Boeing Alert Service Bulletin 727– 28A0133, dated October 5, 2011, specifies prior or concurrent accomplishment of the actions specified in Boeing Service Bulletin 727–28– 0131, dated August 18, 2010, for the following actions: • Replacing the FQIS wires with new wires, which includes: Installing new ground brackets in the left and right wing, a new disconnect bracket in the cargo compartment, and a new tie plate in the cargo compartment; making and installing new doublers in the left and right wing; installing new standoffs in the left and right wing; drilling new holes or ground holes in left and right wing; changing the wire bundles; making changes to wire bundle routes; and making changes to wire bundles and assembling wire bundle overbraids. • Doing a low-frequency eddy current (LFEC) inspection for cracks in certain locations of the fuselage skin, and repair if necessary, in accordance with Boeing Service Bulletin 727–28–0131, dated August 18, 2010. Airworthiness Limitation Instruction (ALI) Task 28–AWL–20, ‘‘Fuel Boost Pump Wires in Conduit Installation—In Fuel Tank;’’ and Critical Design Configuration Control Limitation (CDCCL) Task 28–AWL–21, ‘‘Fuel Boost Pump Wires in Conduit Installation—In Fuel Tank;’’ of Section 9 of Boeing 727– 100/200 Airworthiness Limitations (AWLs), D6–8766–AWL, Revision August 2010, provide maintenance instructions for the wiring changes and replace the requirements of CDCCL Task 28–AWL–14 of Section 9 of Boeing 727– 100/200 Airworthiness Limitations (AWLs), D6–8766–AWL. 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 retain certain requirements of AD 2007–11–08, PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 Amendment 39–15065 (72 FR 28594, May 22, 2007). This proposed AD would also require accomplishing the actions specified in the service information described previously, except as provided under ‘‘Differences Between the AD and the Service Information.’’ Differences Between the Proposed AD and the Service Information Although Boeing Alert Service Bulletin 727–28A0133, dated October 5, 2011, specifies that operators may contact the manufacturer for disposition of certain repair conditions, this proposed AD would require operators to repair those conditions using a method approved by the FAA. Change to Existing AD This proposed AD would remove the reporting requirements of paragraph (m) of AD 2007–11–08, Amendment 39– 15065 (72 FR 28594, May 22, 2007). The inspection report requirement gathered sufficient information for the manufacturer to develop corrective actions. This proposed AD would retain certain requirements of AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007). Since AD 2007–11–08 was issued, the AD format has been revised, and certain paragraphs have been rearranged. Also, certain notes have been re-designated as paragraphs. As a result, the corresponding paragraph identifiers have changed in this proposed AD, as listed in the following table: REVISED PARAGRAPH IDENTIFIERS Requirement in AD 2007–11–08, amendment 39–15065 (72 FR 28594, May 22, 2007) paragraph paragraph paragraph paragraph paragraph paragraph paragraph (f) (g) (h) (i) (j) (k) (l) Corresponding requirement in this proposed AD paragraph paragraph paragraph paragraph paragraph paragraph paragraph (g)(1) (g)(2) (g)(3) (h) (i) (j) (k) Costs of Compliance We estimate that this proposed AD affects 569 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: E:\FR\FM\11OCP1.SGM 11OCP1 Federal Register / Vol. 77, No. 197 / Thursday, October 11, 2012 / Proposed Rules 61733 ESTIMATED COSTS Action Labor cost Parts cost Cost per product Number of U.S. airplanes Inspection, test, and corrective actions [retained actions from existing AD 2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 2007)]. Replacement [proposed action] .... 10 work-hours × $85 per hour = $850. $0 ..................... $850 ................. 260 $221,000. 185 work-hours × $85 per hour = $15,725. 1 work-hour × $85 per hour = $85. Up to 248 work-hours × $85 per hour = $21,080. 2 work-hours × $85 per hour = $170. $28,771 ............ $44,496 ............ 569 $25,318,224. $0 ..................... $85 ................... 569 $48,365. Up to $34,865 .. Up to $55,945 .. 569 $0 ..................... $170 ................. 569 Up to $31,832,705. $96,730. Revise Maintenance Program [proposed action]. Concurrent FQIS wire replacement [proposed action]. Concurrent low frequency eddy current (LFEC) inspection [proposed action]. We have received no definitive data that would enable us to provide a cost estimate for the on-condition actions specified in this proposed AD. 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 have 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 that the 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), VerDate Mar<15>2010 14:04 Oct 10, 2012 Jkt 229001 (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. § 39.13 [Amended] 2. The FAA amends § 39.13 by removing airworthiness directive (AD) 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007), and adding the following new AD: The Boeing Company: Docket No. FAA– 2012–1069; Directorate Identifier 2012– NM–044–AD. (a) Comments Due Date The FAA must receive comments on this AD action by November 26, 2012. (b) Affected ADs This AD supersedes AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007), which superseded AD 99–12–52, Amendment 39–11199 (64 FR 33394, June 23, 1999). (c) Applicability (1) This AD applies to all Boeing Model 727, 727C, 727–100, 727–100C, 727–200, and 727–200F series airplanes, certificated in any category. PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 Cost on U.S. operators (2) This AD requires revisions to certain operator maintenance documents to include new actions (e.g., inspections) and/or Critical Design Configuration Control Limitations (CDCCLs). Compliance with these actions and/or CDCCLs is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by this AD, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (p) of this AD. The request should include a description of changes to the required actions that will ensure the continued operational safety of the airplane. (d) Subject Joint Aircraft System Component (JASC)/ Air Transport Association (ATA) of America Code 28, Fuel. (e) Unsafe Condition This AD was prompted by a report of damage found to the sleeve, jacket, and insulation on an electrical wire during a repetitive inspection. We are issuing this AD to detect and correct chafing of the fuel boost pump electrical wiring and leakage of fuel into the conduit, and to prevent electrical arcing between the wiring and the surrounding conduit, which could result in arc-through of the conduit, and consequent fire or explosion of the fuel tank. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Compliance Times This paragraph restates the requirements of paragraphs (f), (g), and (h) of AD 2007–11– 08, Amendment 39–15065 (72 FR 28594, May 22, 2007). (1) For airplanes with 50,000 or more total flight hours as of June 28, 1999 (the effective date of AD 99–12–52, Amendment 39–11199 (64 FR 33394, June 23, 1999)): Within 20 days after June 28, 1999, accomplish the requirements of paragraph (h) of this AD. (2) For airplanes with less than 50,000 total flight hours, but more than 30,000 total flight E:\FR\FM\11OCP1.SGM 11OCP1 61734 Federal Register / Vol. 77, No. 197 / Thursday, October 11, 2012 / Proposed Rules hours, as of June 28, 1999 (the effective date of AD 99–12–52, Amendment 39–11199 (64 FR 33394, June 23, 1999)): Within 30 days after June 28, 1999, accomplish the requirements of paragraph (h) of this AD. (3) For airplanes with 30,000 total flight hours or less as of June 28, 1999 (the effective date of AD 99–12–52, Amendment 39–11199 (64 FR 33394, June 23, 1999)): Within 90 days after June 28, 1999, accomplish the requirements of paragraph (h) of this AD. (h) Retained Detailed Inspection, Corrective Action, and Installation This paragraph restates the requirements of paragraph (i) of AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007). (1) Perform a detailed inspection of the intank fuel boost pump wire bundles, and applicable corrective actions; and, except as provided by paragraph (i) of this AD, install sleeving over the wire bundles; in accordance with Boeing Alert Service Bulletin 727– 28A0126, dated May 24, 1999; Boeing Service Bulletin 727–28A0126, Revision 1, dated May 18, 2000; or Boeing Alert Service Bulletin 727–28A0132, dated February 22, 2007. (2) For the purposes of this AD, a detailed inspection is: ‘‘An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.’’ (i) Retained Installation: Possible Deferral This paragraph restates the optional actions of paragraph (j) of AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007). Installation of sleeving over the wire bundles, as required by paragraph (h) of this AD, may be deferred if, within 18 months or 6,000 flight hours, whichever occurs first, after accomplishment of the inspection and applicable corrective actions required by paragraph (h) of this AD, the following actions are accomplished: Perform a detailed inspection of the in-tank fuel boost pump wire bundles, and applicable corrective actions; and install sleeving over the wire bundles; in accordance with Boeing Alert Service Bulletin 727–28A0126, dated May 24, 1999; Boeing Service Bulletin 727– 28A0126, Revision 1, dated May 18, 2000; or Boeing Alert Service Bulletin 727–28A0132, dated February 22, 2007. pmangrum on DSK3VPTVN1PROD with PROPOSALS-1 (j) Retained Repetitive Inspections and Corrective Actions This paragraph restates the requirements of paragraph (k) of AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007). Repeat the detailed inspection and applicable corrective actions required by paragraphs (h) and (i) of this AD, as applicable, at intervals not to exceed 30,000 flight hours, until the initial inspection, applicable corrective actions, and engine fuel suction feed operational test required by paragraph (k) of this AD have been done. VerDate Mar<15>2010 14:04 Oct 10, 2012 Jkt 229001 (k) Retained Inspection, Test, and Related Investigative and Corrective Actions (o) No Alternative Actions, Intervals, and/or CDCCLs This paragraph restates the requirements of paragraph (l) of AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007). For all airplanes: Within 120 days after June 6, 2007 (the effective date of AD 2007–11–08), or 5,000 flight hours after the last inspection or corrective action done before June 6, 2007, as required by paragraph (h), (i), or (j), as applicable, of this AD, whichever occurs later, do a detailed inspection for damage of the sleeve and electrical wire of the fuel boost pump, and do an engine fuel suction feed operational test; and, before further flight, do related investigative and corrective actions, as applicable; by doing all applicable actions in and in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 727–28A0132, dated February 22, 2007. Repeat the detailed inspection and engine fuel suction feed operational test thereafter at intervals not to exceed 15,000 flight cycles. Accomplishment of the initial inspection, applicable corrective actions, and engine fuel suction feed operational test of this paragraph terminates the requirements of paragraphs (h), (i), and (j) of this AD. After accomplishing the revision required by paragraph (n) of this AD, no alternative actions (e.g., inspections), intervals, and/or CDCCLs may be used unless the actions, intervals, and/or CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (p) of this AD. (l) New Installation Within 60 months after the effective date of this AD: Install new shielded wire bundles in convoluted liners in the wing and center fuel tank conduits and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 727–28A0133, dated October 5, 2011. Related investigative and corrective actions must be done before further flight. Doing the actions in paragraphs (l) and (m) of this AD terminates the requirements of paragraphs (g), (h), (i), (j), and (k) of this AD. (m) New Concurrent Requirement Before or concurrently with accomplishing the requirements of paragraph (l) of this AD, replace the fuel quantity indicating system (FQIS) wire bundles and do a low frequency eddy current inspection for cracking, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 727– 28–0131, dated August 18, 2010. If any cracking is found during the inspection, before further flight, repair using a method approved in accordance with the procedures specified in paragraph (p) of this AD. (n) New Maintenance Program Revision Within 60 days after the effective date of this AD: Revise the maintenance program to incorporate Airworthiness Limitation Instruction (ALI) Task 28–AWL–20, ‘‘Fuel Boost Pump Wires in Conduit Installation— In Fuel Tank;’’ and CDCCL Task 28–AWL– 21, ‘‘Fuel Boost Pump Wires in Conduit Installation—In Fuel Tank,’’ of Section 9 of Boeing 727–100/200 Airworthiness Limitations (AWLs), D6–8766–AWL, Revision August 2010. The initial compliance time for the inspections is within 60 months after the effective date of this AD. PO 00000 Frm 00004 Fmt 4702 Sfmt 9990 (p) 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. (3) AMOCs approved previously in accordance with AD 2007–11–08, Amendment 39–15065 (72 FR 28594, May 22, 2007), are approved as AMOCs for the corresponding provisions of this AD. (q) Related Information (1) For more information about this AD, contact Rebel Nichols, Aerospace Engineer, Propulsion Branch, ANM–140S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425–917–6509; fax: 425–917–6590; email: rebel.nichols@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; telephone 206– 544–5000, extension 1; fax 206–766–5680; 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. For information on the availability of this material at the FAA, call 425–227–1221. Issued in Renton, Washington, on September 28, 2012. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2012–24954 Filed 10–10–12; 8:45 am] BILLING CODE 4910–13–P E:\FR\FM\11OCP1.SGM 11OCP1

Agencies

[Federal Register Volume 77, Number 197 (Thursday, October 11, 2012)]
[Proposed Rules]
[Pages 61731-61734]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-24954]


========================================================================
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.

========================================================================


Federal Register / Vol. 77, No. 197 / Thursday, October 11, 2012 / 
Proposed Rules

[[Page 61731]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-1069; Directorate Identifier 2012-NM-044-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 supersede an existing airworthiness directive 
(AD) that applies to all The Boeing Company Model 727 airplanes. The 
existing AD currently requires repetitive inspections of the in-tank 
fuel boost pump wiring to detect chafing of the wire insulation, 
evidence of electrical arcing, or arc-through of the conduit wall, and 
applicable corrective action; and installation of sleeving over the in-
tank fuel boost pump wires. The existing AD also requires repetitive 
inspections for damage of a certain electrical wire and sleeve, and 
arcing damage of the conduit and signs of fuel leakage into the 
conduit; applicable investigative and corrective actions; and 
repetitive engine fuel suction feed operational tests. Since we issued 
that AD, we received a report of damage found to the sleeve, jacket, 
and insulation on an electrical wire during a repetitive inspection. 
This proposed AD would require replacement of the wire bundles for the 
wing and center fuel boost pumps with new, improved wire bundles, 
installation of convoluted liners, and related investigative and 
corrective actions if necessary. This proposed AD would also require 
replacement of the fuel quantity indicating system (FQIS) wires with 
new, improved wires; a low-frequency eddy current inspection for 
cracking; and repair if necessary. This proposed AD would also require 
revising the maintenance program to incorporate changes to the 
airworthiness limitations section. We are proposing this AD to detect 
and correct chafing of the fuel boost pump electrical wiring and 
leakage of fuel into the conduit, and to prevent electrical arcing 
between the wiring and the surrounding conduit, which could result in 
arc-through of the conduit, and consequent fire or explosion of the 
fuel tank.

DATES: We must receive comments on this proposed AD by November 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 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; telephone 206-544-
5000, extension 1; fax 206-766-5680; 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. 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: Rebel Nichols, Aerospace Engineer, 
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification 
Office, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6509; fax: 425-917-6590; email: rebel.nichols@faa.gov.

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-2012-1069; 
Directorate Identifier 2012-NM-044-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

    On May 1, 2007, we issued AD 2007-11-08, Amendment 39-15065 (72 FR 
28594, May 22, 2007), for all The Boeing Company Model 727, 727C, 727-
100, 727-100C, 727-200, and 727-200F series airplanes. That AD requires 
repetitive inspections of the in-tank fuel boost pump wiring to detect 
chafing of the wire insulation, evidence of electrical arcing, or arc-
through of the conduit wall, and applicable corrective action; and 
installation of sleeving over the in-tank fuel boost pump wires as a 
method to protect the wiring from chafing. That AD also requires 
repetitive inspections for damage of the electrical wire and sleeve 
that run to the fuel boost pump through a conduit in the fuel tank, and 
arcing damage of the conduit and signs of fuel leakage into the 
conduit; applicable investigative and corrective actions; repetitive 
engine fuel suction feed operational tests; an engine fuel suction feed 
operational test; related investigative and corrective actions, as 
applicable; and sending

[[Page 61732]]

inspection results and damaged parts to the manufacturer.

Actions Since Existing AD (72 FR 28594, May 22, 2007) Was Issued

    In the preamble to AD 2007-11-08, Amendment 39-15065 (72 FR 28594, 
May 22, 2007), the FAA indicated that the actions required by that AD 
were considered ``interim action'' and that further rulemaking action 
was being considered. The FAA now has determined that further 
rulemaking action is indeed necessary, and this proposed AD follows 
from that determination.
    Further, since we issued AD 2007-11-08, Amendment 39-15065 (72 FR 
28594, May 22, 2007), we received a report of damage found to the 
sleeve, jacket, and insulation on an electrical wire during a 
repetitive inspection approximately 21,000 flight hours after 
installation of the sleeve. (The inspection interval in AD 2007-11-08 
is 30,000 flight hours.) The sleeve and jacket were worn through, 
exposing the insulation on the electrical wire inside the jacket. The 
actions developed by the manufacturer eliminate the possibility of 
wiring damage during reinstallation following the repetitive 
inspections.

Relevant Service Information

    We reviewed Boeing Alert Service Bulletin 727-28A0133, dated 
October 5, 2011. This service bulletin describes procedures for 
replacing wire bundles for the wing and center fuel boost pumps, 
installing convoluted liners, and related investigative and corrective 
actions. This service bulletin specifies that doing these actions 
eliminates the need for the inspections specified in Boeing Alert 
Service Bulletin 727-28A0132, dated February 22, 2007 (which is 
referenced as the appropriate source of service information for 
inspections specified in AD 2007-11-08, Amendment 39-15065 (72 FR 
28594, May 22, 2007)). Replacing the wire bundles and installing the 
convoluted liners includes:
     Installing new ground brackets, removing fuel boost pumps 
from the fuel boost pump housing, and removing wire bundles and 
sleeves.
     Removing or stowing fuel boost pump wire bundles, 
installing new convoluted liners and new wire bundles in the fuel boost 
pump conduits.
     Routing new wire bundles.
     Installing fuel boost pumps and making changes to the wire 
bundles.
     Installing the ground stud assembly for wire bundles.
    Related investigative actions include testing the fuel tank 
conduits for leaks and testing the fuel boost pumps. Corrective actions 
include repairing or replacing the fuel tank conduit.
    Boeing Alert Service Bulletin 727-28A0133, dated October 5, 2011, 
specifies prior or concurrent accomplishment of the actions specified 
in Boeing Service Bulletin 727-28-0131, dated August 18, 2010, for the 
following actions:
     Replacing the FQIS wires with new wires, which includes: 
Installing new ground brackets in the left and right wing, a new 
disconnect bracket in the cargo compartment, and a new tie plate in the 
cargo compartment; making and installing new doublers in the left and 
right wing; installing new standoffs in the left and right wing; 
drilling new holes or ground holes in left and right wing; changing the 
wire bundles; making changes to wire bundle routes; and making changes 
to wire bundles and assembling wire bundle overbraids.
     Doing a low-frequency eddy current (LFEC) inspection for 
cracks in certain locations of the fuselage skin, and repair if 
necessary, in accordance with Boeing Service Bulletin 727-28-0131, 
dated August 18, 2010.
    Airworthiness Limitation Instruction (ALI) Task 28-AWL-20, ``Fuel 
Boost Pump Wires in Conduit Installation--In Fuel Tank;'' and Critical 
Design Configuration Control Limitation (CDCCL) Task 28-AWL-21, ``Fuel 
Boost Pump Wires in Conduit Installation--In Fuel Tank;'' of Section 9 
of Boeing 727-100/200 Airworthiness Limitations (AWLs), D6-8766-AWL, 
Revision August 2010, provide maintenance instructions for the wiring 
changes and replace the requirements of CDCCL Task 28-AWL-14 of Section 
9 of Boeing 727-100/200 Airworthiness Limitations (AWLs), D6-8766-AWL.

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 retain certain requirements of AD 2007-11-
08, Amendment 39-15065 (72 FR 28594, May 22, 2007). This proposed AD 
would also require accomplishing the actions specified in the service 
information described previously, except as provided under 
``Differences Between the AD and the Service Information.''

Differences Between the Proposed AD and the Service Information

    Although Boeing Alert Service Bulletin 727-28A0133, dated October 
5, 2011, specifies that operators may contact the manufacturer for 
disposition of certain repair conditions, this proposed AD would 
require operators to repair those conditions using a method approved by 
the FAA.

Change to Existing AD

    This proposed AD would remove the reporting requirements of 
paragraph (m) of AD 2007-11-08, Amendment 39-15065 (72 FR 28594, May 
22, 2007). The inspection report requirement gathered sufficient 
information for the manufacturer to develop corrective actions.
    This proposed AD would retain certain requirements of AD 2007-11-
08, Amendment 39-15065 (72 FR 28594, May 22, 2007). Since AD 2007-11-08 
was issued, the AD format has been revised, and certain paragraphs have 
been rearranged. Also, certain notes have been re-designated as 
paragraphs. As a result, the corresponding paragraph identifiers have 
changed in this proposed AD, as listed in the following table:

                      Revised Paragraph Identifiers
------------------------------------------------------------------------
   Requirement in AD 2007-11-08,
 amendment 39-15065 (72 FR 28594,    Corresponding  requirement in this
           May 22, 2007)                         proposed AD
------------------------------------------------------------------------
 paragraph (f)                       paragraph (g)(1)
 paragraph (g)                       paragraph (g)(2)
 paragraph (h)                       paragraph (g)(3)
 paragraph (i)                       paragraph (h)
 paragraph (j)                       paragraph (i)
 paragraph (k)                       paragraph (j)
 paragraph (l)                       paragraph (k)
------------------------------------------------------------------------

Costs of Compliance

    We estimate that this proposed AD affects 569 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

[[Page 61733]]



                                                                     Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                  Number of U.S.       Cost on U.S.
               Action                         Labor cost                Parts cost           Cost per product        airplanes           operators
--------------------------------------------------------------------------------------------------------------------------------------------------------
Inspection, test, and corrective     10 work-hours x $85 per      $0....................  $850..................             260  $221,000.
 actions [retained actions from       hour = $850.
 existing AD 2007[dash]11[dash]08,
 Amendment 39[dash]15065 (72 FR
 28594, May 22, 2007)].
Replacement [proposed action]......  185 work-hours x $85 per     $28,771...............  $44,496...............             569  $25,318,224.
                                      hour = $15,725.
Revise Maintenance Program           1 work-hour x $85 per hour   $0....................  $85...................             569  $48,365.
 [proposed action].                   = $85.
Concurrent FQIS wire replacement     Up to 248 work-hours x $85   Up to $34,865.........  Up to $55,945.........             569  Up to $31,832,705.
 [proposed action].                   per hour = $21,080.
Concurrent low frequency eddy        2 work-hours x $85 per hour  $0....................  $170..................             569  $96,730.
 current (LFEC) inspection            = $170.
 [proposed action].
--------------------------------------------------------------------------------------------------------------------------------------------------------

    We have received no definitive data that would enable us to provide 
a cost estimate for the on-condition actions specified in this proposed 
AD.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, Section 106, describes the 
authority of the FAA Administrator. Subtitle VII, Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701, ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We have determined that this 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 that the 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 removing airworthiness directive 
(AD) 2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 2007), and 
adding the following new AD:

The Boeing Company: Docket No. FAA-2012-1069; Directorate Identifier 
2012-NM-044-AD.

(a) Comments Due Date

    The FAA must receive comments on this AD action by November 26, 
2012.

(b) Affected ADs

    This AD supersedes AD 2007-11-08, Amendment 39-15065 (72 FR 
28594, May 22, 2007), which superseded AD 99-12-52, Amendment 39-
11199 (64 FR 33394, June 23, 1999).

(c) Applicability

    (1) This AD applies to all Boeing Model 727, 727C, 727-100, 727-
100C, 727-200, and 727-200F series airplanes, certificated in any 
category.
    (2) This AD requires revisions to certain operator maintenance 
documents to include new actions (e.g., inspections) and/or Critical 
Design Configuration Control Limitations (CDCCLs). Compliance with 
these actions and/or CDCCLs is required by 14 CFR 91.403(c). For 
airplanes that have been previously modified, altered, or repaired 
in the areas addressed by this AD, the operator may not be able to 
accomplish the actions described in the revisions. In this 
situation, to comply with 14 CFR 91.403(c), the operator must 
request approval for an alternative method of compliance according 
to paragraph (p) of this AD. The request should include a 
description of changes to the required actions that will ensure the 
continued operational safety of the airplane.

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by a report of damage found to the sleeve, 
jacket, and insulation on an electrical wire during a repetitive 
inspection. We are issuing this AD to detect and correct chafing of 
the fuel boost pump electrical wiring and leakage of fuel into the 
conduit, and to prevent electrical arcing between the wiring and the 
surrounding conduit, which could result in arc-through of the 
conduit, and consequent fire or explosion of the fuel tank.

(f) Compliance

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

(g) Retained Compliance Times

    This paragraph restates the requirements of paragraphs (f), (g), 
and (h) of AD 2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 
2007).
    (1) For airplanes with 50,000 or more total flight hours as of 
June 28, 1999 (the effective date of AD 99-12-52, Amendment 39-11199 
(64 FR 33394, June 23, 1999)): Within 20 days after June 28, 1999, 
accomplish the requirements of paragraph (h) of this AD.
    (2) For airplanes with less than 50,000 total flight hours, but 
more than 30,000 total flight

[[Page 61734]]

hours, as of June 28, 1999 (the effective date of AD 99-12-52, 
Amendment 39-11199 (64 FR 33394, June 23, 1999)): Within 30 days 
after June 28, 1999, accomplish the requirements of paragraph (h) of 
this AD.
    (3) For airplanes with 30,000 total flight hours or less as of 
June 28, 1999 (the effective date of AD 99-12-52, Amendment 39-11199 
(64 FR 33394, June 23, 1999)): Within 90 days after June 28, 1999, 
accomplish the requirements of paragraph (h) of this AD.

(h) Retained Detailed Inspection, Corrective Action, and Installation

    This paragraph restates the requirements of paragraph (i) of AD 
2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 2007).
    (1) Perform a detailed inspection of the in-tank fuel boost pump 
wire bundles, and applicable corrective actions; and, except as 
provided by paragraph (i) of this AD, install sleeving over the wire 
bundles; in accordance with Boeing Alert Service Bulletin 727-
28A0126, dated May 24, 1999; Boeing Service Bulletin 727-28A0126, 
Revision 1, dated May 18, 2000; or Boeing Alert Service Bulletin 
727-28A0132, dated February 22, 2007.
    (2) For the purposes of this AD, a detailed inspection is: ``An 
intensive examination of a specific item, installation, or assembly 
to detect damage, failure, or irregularity. Available lighting is 
normally supplemented with a direct source of good lighting at an 
intensity deemed appropriate. Inspection aids such as mirror, 
magnifying lenses, etc., may be necessary. Surface cleaning and 
elaborate procedures may be required.''

(i) Retained Installation: Possible Deferral

    This paragraph restates the optional actions of paragraph (j) of 
AD 2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 2007). 
Installation of sleeving over the wire bundles, as required by 
paragraph (h) of this AD, may be deferred if, within 18 months or 
6,000 flight hours, whichever occurs first, after accomplishment of 
the inspection and applicable corrective actions required by 
paragraph (h) of this AD, the following actions are accomplished: 
Perform a detailed inspection of the in-tank fuel boost pump wire 
bundles, and applicable corrective actions; and install sleeving 
over the wire bundles; in accordance with Boeing Alert Service 
Bulletin 727-28A0126, dated May 24, 1999; Boeing Service Bulletin 
727-28A0126, Revision 1, dated May 18, 2000; or Boeing Alert Service 
Bulletin 727-28A0132, dated February 22, 2007.

(j) Retained Repetitive Inspections and Corrective Actions

    This paragraph restates the requirements of paragraph (k) of AD 
2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 2007). Repeat 
the detailed inspection and applicable corrective actions required 
by paragraphs (h) and (i) of this AD, as applicable, at intervals 
not to exceed 30,000 flight hours, until the initial inspection, 
applicable corrective actions, and engine fuel suction feed 
operational test required by paragraph (k) of this AD have been 
done.

(k) Retained Inspection, Test, and Related Investigative and Corrective 
Actions

    This paragraph restates the requirements of paragraph (l) of AD 
2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 2007). For all 
airplanes: Within 120 days after June 6, 2007 (the effective date of 
AD 2007-11-08), or 5,000 flight hours after the last inspection or 
corrective action done before June 6, 2007, as required by paragraph 
(h), (i), or (j), as applicable, of this AD, whichever occurs later, 
do a detailed inspection for damage of the sleeve and electrical 
wire of the fuel boost pump, and do an engine fuel suction feed 
operational test; and, before further flight, do related 
investigative and corrective actions, as applicable; by doing all 
applicable actions in and in accordance with the Accomplishment 
Instructions of Boeing Alert Service Bulletin 727-28A0132, dated 
February 22, 2007. Repeat the detailed inspection and engine fuel 
suction feed operational test thereafter at intervals not to exceed 
15,000 flight cycles. Accomplishment of the initial inspection, 
applicable corrective actions, and engine fuel suction feed 
operational test of this paragraph terminates the requirements of 
paragraphs (h), (i), and (j) of this AD.

(l) New Installation

    Within 60 months after the effective date of this AD: Install 
new shielded wire bundles in convoluted liners in the wing and 
center fuel tank conduits and do all applicable related 
investigative and corrective actions, in accordance with the 
Accomplishment Instructions of Boeing Alert Service Bulletin 727-
28A0133, dated October 5, 2011. Related investigative and corrective 
actions must be done before further flight. Doing the actions in 
paragraphs (l) and (m) of this AD terminates the requirements of 
paragraphs (g), (h), (i), (j), and (k) of this AD.

(m) New Concurrent Requirement

    Before or concurrently with accomplishing the requirements of 
paragraph (l) of this AD, replace the fuel quantity indicating 
system (FQIS) wire bundles and do a low frequency eddy current 
inspection for cracking, in accordance with the Accomplishment 
Instructions of Boeing Service Bulletin 727-28-0131, dated August 
18, 2010. If any cracking is found during the inspection, before 
further flight, repair using a method approved in accordance with 
the procedures specified in paragraph (p) of this AD.

(n) New Maintenance Program Revision

    Within 60 days after the effective date of this AD: Revise the 
maintenance program to incorporate Airworthiness Limitation 
Instruction (ALI) Task 28-AWL-20, ``Fuel Boost Pump Wires in Conduit 
Installation--In Fuel Tank;'' and CDCCL Task 28-AWL-21, ``Fuel Boost 
Pump Wires in Conduit Installation--In Fuel Tank,'' of Section 9 of 
Boeing 727-100/200 Airworthiness Limitations (AWLs), D6-8766-AWL, 
Revision August 2010. The initial compliance time for the 
inspections is within 60 months after the effective date of this AD.

(o) No Alternative Actions, Intervals, and/or CDCCLs

    After accomplishing the revision required by paragraph (n) of 
this AD, no alternative actions (e.g., inspections), intervals, and/
or CDCCLs may be used unless the actions, intervals, and/or CDCCLs 
are approved as an alternative method of compliance (AMOC) in 
accordance with the procedures specified in paragraph (p) of this 
AD.

(p) 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.
    (3) AMOCs approved previously in accordance with AD 2007-11-08, 
Amendment 39-15065 (72 FR 28594, May 22, 2007), are approved as 
AMOCs for the corresponding provisions of this AD.

(q) Related Information

    (1) For more information about this AD, contact Rebel Nichols, 
Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle 
Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 
98057-3356; phone: 425-917-6509; fax: 425-917-6590; email: 
rebel.nichols@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; telephone 206-544-
5000, extension 1; fax 206-766-5680; 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. For information on the availability of 
this material at the FAA, call 425-227-1221.

    Issued in Renton, Washington, on September 28, 2012.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-24954 Filed 10-10-12; 8:45 am]
BILLING CODE 4910-13-P