81 FR 12041 - Airworthiness Directives; The Boeing Company Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 81, Issue 45 (March 8, 2016)
Federal Aviation Administration
Federal Register Volume 81, Issue 45 (March 8, 2016)
| Page Range | 12041-12044 | |
| FR Document | 2016-04681 |
[Federal Register Volume 81, Number 45 (Tuesday, March 8, 2016)] [Proposed Rules] [Pages 12041-12044] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-04681] ----------------------------------------------------------------------- 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: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period. ----------------------------------------------------------------------- SUMMARY: We are revising an earlier proposed 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. The notice of proposed rulemaking (NPRM) proposed to 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. The NPRM 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 action revises the NPRM by adding a revision to the maintenance or inspection program, as applicable, to include critical design configuration control limitations (CDCCL) for the fuel boost pump wiring. We are proposing this SNPRM 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. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes. DATES: We must receive comments on this SNPRM by April 22, 2016. 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: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this SNPRM, 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 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. Boeing Alert Service Bulletin 747-28A2306, dated October 2, 2014, 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:// [[Page 12042]] 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: [email protected]. 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-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 issued an NPRM to amend 14 CFR part 39 by adding an AD that would apply to 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. The NPRM published in the Federal Register on May 1, 2015 (80 FR 24850) (``the NPRM''). The NPRM proposed to 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. Actions Since the NPRM was Issued Since we issued the NPRM, we have determined that it is necessary to revise the NPRM by adding a revision to the maintenance or inspection program, as applicable, to include critical design configuration control limitations (CDCCL) for the fuel boost pump wiring. Related AD AD 2011-15-03, Amendment 39-16750 (76 FR 41659, July 15, 2011) (``AD 2011-15-03''), superseded AD 97-26-07, Amendment 39-10250 (62 FR 65352, December 12, 1997), and requires 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 requires 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 inspections required by paragraphs (g), (h), and (n) of AD 2011-15-03. Comments We gave the public the opportunity to comment on the NPRM. The following presents the comments received on the NPRM and the FAA's response to each comment. Support for the NPRM Boeing concurred with the contents of the NPRM. Request To Withdraw the NPRM UPS recommended that we withdraw the NPRM so that UPS can continue doing the inspections required by AD 2011-15-03. UPS stated that it has been inspecting the forward and aft boost pump wire bundles and sleeving since 2007 per the requirements in AD 2011-15-03, and is satisfied with the current inspection, which detects signs of wear before major damage occurs. UPS added that the wire bundle replacement in this NPRM is a burden to the airlines, without adding safety to the boost pump or airplane fuel system. We do not agree with the commenter's request to withdraw the NPRM. We agree that the inspection required by AD 2011-15-03 is likely to detect signs of wear before major damage occurs, but the potential for an ignition source inside the fuel tank due to the single failure condition still exists. The manufacturer has now developed an improved wire bundle installation that eliminates the single failure condition. We have determined that installation of the improved design is required to eliminate the need for periodic maintenance and inspections in order to ensure safety. Request To Change Paragraph (g) of the Proposed AD (in the NPRM) United Airlines (United) asked that paragraph (g) of the proposed AD (in the NPRM) be changed to add paragraphs (g), (h), (i), (j), and (k) of AD 2011-15-03, to the language which terminates the repetitive inspections required by paragraph (n) of AD 2011-15-03. United stated that those paragraphs are also terminated after doing the wire bundle replacement required by paragraph (g) of the proposed AD (in the NPRM). We agree to add paragraphs (g) and (h) of AD 2011-15-03, to the terminating action language specified in paragraph (g) of this proposed AD, because the replacement required by this proposed AD would terminate the inspections required by paragraphs (g) and (h) of AD 2011-15-03. However, paragraphs (i), (j), and (k) of AD 2011-15-03 are on-condition corrective actions, which must be done depending on the findings during any inspection required by paragraph (g) or (h) of AD 2011-15-03. Therefore, we have not referenced paragraphs (i), (j), and (k) of AD 2011-15-03 in paragraph (g) of this proposed AD. Request To Add AWL Items United stated that incorporating airworthiness limitation (AWL) tasks 28-AWL-24 (747 CL Certification Maintenance Requirements) and 28- AWL-35 (747-400 Maintenance Planning Data) should also be required by the NPRM. We agree that this proposed AD should include revising the maintenance or inspection program, as applicable, by incorporating the CDCCL tasks related to accomplishing Boeing Alert Service Bulletin 747- 28A2306, dated October 2, 2014; therefore, we have added new paragraphs (h) and (i) to this proposed AD to include those requirements. We have redesignated subsequent paragraphs accordingly. [[Page 12043]] Related Service Information Under 1 CFR Part 51 We reviewed the following service information: 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. AWL No. 28-AWL-24, ``Fuel Boost Pump Wires In Conduit Installation--In Fuel Tank,'' of Sub-section C.1, ``Fuel Tank Ignition Prevention,'' of Section C., ``Airworthiness Limitations--Systems,'' of the Boeing 747-100/200/300/SP Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs) Document D6-13747-CMR, Revision June 2014. The service information describes a CDCCL for the fuel boost pump wiring. AWL No. 28-AWL-35, ``Fuel Boost Pump Wires In Conduit Installation--In Fuel Tank,'' of Sub-section B.1, ``Fuel System Ignition Prevention,'' of Section B, ``Airworthiness Limitations (AWLs)--Systems,'' of Section 9, Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), of Boeing 747-400 Maintenance Planning Data (MPD) Document D621U400-9, Revision June 2014. The service information describes a CDCCL for the fuel boost pump wiring. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. FAA's Determination We are proposing this SNPRM 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. Certain changes described above expand the scope of the NPRM (80 FR 24850, May 1, 2013). As a result, we have determined that it is necessary to reopen the comment period to provide additional opportunity for the public to comment on this SNPRM. Proposed Requirements of This SNPRM This SNPRM would require accomplishing the actions specified in Boeing Alert Service Bulletin 747-28A2306, dated October 2, 2014, described previously. This SNPRM would also require revising the maintenance or inspection program, as applicable, to include CDCCLs for the fuel boost pump wiring. This AD requires revisions to certain operator maintenance documents to include new actions (e.g., inspections) and CDCCLs. Compliance with these actions and 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 proposed 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 (j) of this AD. The request should include a description of changes to the required actions that will ensure the continued damage tolerance of the affected structure. Notwithstanding any other maintenance or operational requirements, components that have been identified as airworthy or installed on the affected airplanes before accomplishing the revision of the airplane maintenance or inspection program specified in this proposed AD do not need to be reworked in accordance with the CDCCLs. However, once the airplane maintenance or inspection program has been revised as required by this proposed AD, future maintenance actions on these components must be done in accordance with the CDCCLs. 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 ---------------------------------------------------------------------------------------------------------------- Cost on U.S. Action Labor cost Parts cost Cost per product operators ---------------------------------------------------------------------------------------------------------------- Replacement...................... Up to 53 $4,600 Up to $9,105....... Up to $1,602,480. work[dash]hours x $85 per hour = $4,505. Revise maintenance or inspection 1 work-hour x $85 0 $85................ $14,960. program. per hour = $85. ---------------------------------------------------------------------------------------------------------------- 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, [[Page 12044]] 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 April 22, 2016. (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. (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 inspections required by paragraphs (g), (h), and (n) of AD 2011-15-03, Amendment 39-16750 (76 FR 41659, July 15, 2011). (h) Maintenance or Inspection Program Revision Within 180 days after the effective date of this AD, revise the maintenance or inspection program, as applicable, to incorporate critical design configuration control limitation (CDCCL) Task AWL No. 28-AWL-24, ``Fuel Boost Pump Wires In Conduit Installation--In Fuel Tank,'' of Sub-section C.1, ``Fuel Tank Ignition Prevention,'' of Section C., ``Airworthiness Limitations--Systems,'' of the Boeing 747-100/200/300/SP Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs) Document D6-13747-CMR, Revision June 2014; or CDCCL Task No. AWL No. 28-AWL-35, ``Fuel Boost Pump Wires In Conduit Installation--In Fuel Tank,'' of Sub- section B.1, ``Fuel System Ignition Prevention,'' of Section B, ``Airworthiness Limitations (AWLs)--Systems,'' of Section 9, Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), of Boeing 747-400 Maintenance Planning Data (MPD) Document D621U400-9, Revision June 2014; as applicable. (i) No Alternative Actions, Intervals, and/or CDCCLs After accomplishing the revision required by paragraph (h) 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 (j) of this AD. (j) 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 (k)(1) of this AD. Information may be emailed to: [email protected]. (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, modification, or alteration 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. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (k) Related Information (1) For more information about this AD, contact Tung Tran, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle ACO, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6505; fax: 425-917-6590; email: [email protected]. (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 February 18, 2016. Dorr M. Anderson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2016-04681 Filed 3-7-16; 8:45 am] BILLING CODE 4910-13-P
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effective date of this AD, install new engine (ii) Steps not labeled as RC may be of the wire bundles inside the electrical
fuel spar motor operated valve (MOV) deviated from using accepted methods in conduit of the forward and aft boost
actuators having part number (P/N) accordance with the operator’s maintenance pumps of the numbers 1 and 4 main fuel
MA30A1017, in accordance with the or inspection program without obtaining tanks due to high vibration. These wire
Accomplishment Instructions of Boeing approval of an AMOC, provided the RC steps,
Service Bulletin 777–28A0034, Revision 3, including substeps and identified figures, can
bundles can chafe through the wire
dated September 25, 2015. still be done as specified, and the airplane sleeving into the insulation, exposing
(2) For airplanes having AIMS 2, can be put back in an airworthy condition the wire conductors. This action revises
Blockpoint Version 16 or earlier installed: the NPRM by adding a revision to the
Within 24 months after the effective date of (j) Related Information maintenance or inspection program, as
this AD, do the actions in paragraph (g)(2)(i) (1) For more information about this AD, applicable, to include critical design
or (g)(2)(ii) of this AD. contact David Lee, Aerospace Engineer, configuration control limitations
(i) Install new engine fuel spar MOV Propulsion Branch, ANM–140S, FAA, Seattle (CDCCL) for the fuel boost pump wiring.
actuators having P/N MA30A1017, in Aircraft Certification Office, 1601 Lind We are proposing this SNPRM to
accordance with the Accomplishment Avenue SW., Renton, WA 98057–3356;
phone: 425–917–6497; fax: 425–917–6590;
prevent chafing of the wire bundles and
Instructions of Boeing Service Bulletin 777–
28A0034, Revision 3, dated September 25, email: david.a.lee@faa.gov. subsequent arcing between the wiring
2015. (2) For service information identified in and the electrical conduit creating an
(ii) Install AIMS 2, Blockpoint Version 17 this AD, contact Boeing Commercial ignition source in the fuel tanks, which
or later, in accordance with the Airplanes, Attention: Data & Services could result in a fire and consequent
Accomplishment Instructions of Boeing Management, P. O. Box 3707, MC 2H–65, fuel tank explosion. Since these actions
Service Bulletin 777–31–0227, Revision 1, Seattle, WA 98124–2207; telephone 206– impose an additional burden over that
dated August 12, 2015. 544–5000, extension 1; fax 206–766–5680; proposed in the NPRM, we are
Internet https://www.myboeingfleet.com. You reopening the comment period to allow
(h) Credit for Previous Actions may view this referenced service information the public the chance to comment on
This paragraph provides credit for actions at the FAA, Transport Airplane Directorate,
required by paragraph (g)(2)(ii) of this AD, if 1601 Lind Avenue SW., Renton, WA. For
these proposed changes.
those actions were performed before the information on the availability of this DATES: We must receive comments on
effective date of this AD using Boeing Special material at the FAA, call 425–227–1221. this SNPRM by April 22, 2016.
Attention Service Bulletin 777–31–0227, ADDRESSES: You may send comments,
Issued in Renton, Washington, on February
dated November 7, 2014, which is not using the procedures found in 14 CFR
25, 2016.
incorporated by reference in this AD. 11.43 and 11.45, by any of the following
Dionne Palermo,
(i) Alternative Methods of Compliance Acting Manager, Transport Airplane
methods:
(AMOCs) Directorate, Aircraft Certification Service.
• Federal eRulemaking Portal: Go to
(1) The Manager, Seattle Aircraft http://www.regulations.gov. Follow the
[FR Doc. 2016–04682 Filed 3–7–16; 8:45 am]
Certification Office (ACO) FAA, has the instructions for submitting comments.
authority to approve AMOCs for this AD, if
BILLING CODE 4910–13–P • Fax: 202–493–2251.
requested using the procedures found in 14 • Mail: U.S. Department of
CFR 39.19. In accordance with 14 CFR 39.19, Transportation, Docket Operations, M–
send your request to your principal inspector DEPARTMENT OF TRANSPORTATION 30, West Building Ground Floor, Room
or local Flight Standards District Office, as W12–140, 1200 New Jersey Avenue SE.,
appropriate. If sending information directly Federal Aviation Administration
Washington, DC 20590.
to the manager of the ACO, send it to the • Hand Delivery: U.S. Department of
attention of the person identified in 14 CFR Part 39 Transportation, Docket Operations, M–
paragraph (j)(1) of this AD. Information may [Docket No. FAA–2015–0935; Directorate 30, West Building Ground Floor, Room
be emailed to: 9-ANM-Seattle-ACO-AMOC-
Requests@faa.gov.
Identifier 2014–NM–243–AD] W12–140, 1200 New Jersey Avenue SE.,
(2) Before using any approved AMOC, RIN 2120–AA64 Washington, DC 20590, between 9 a.m.
notify your appropriate principal inspector, and 5 p.m., Monday through Friday,
or lacking a principal inspector, the manager Airworthiness Directives; The Boeing except Federal holidays.
of the local flight standards district office/ Company Airplanes For service information identified in
certificate holding district office. this SNPRM, contact Boeing
(3) An AMOC that provides an acceptable AGENCY: Federal Aviation Commercial Airplanes, Attention: Data
level of safety may be used for any repair, Administration (FAA), DOT. & Services Management, P. O. Box 3707,
modification, or alteration required by this ACTION: Supplemental notice of MC 2H–65, Seattle, WA 98124–2207;
AD if it is approved by the Boeing proposed rulemaking (SNPRM); telephone: 206–544–5000, extension 1;
Commercial Airplanes Organization fax: 206–766–5680; Internet: https://
Designation Authorization (ODA) that has
reopening of comment period.
been authorized by the Manager, Seattle
www.myboeingfleet.com. You may view
SUMMARY: We are revising an earlier this referenced service information at
ACO, to make those findings. To be
approved, the repair method, modification
proposed airworthiness directive (AD) the FAA, Transport Airplane
deviation, or alteration deviation must meet for certain The Boeing Company Model Directorate, 1601 Lind Avenue SW.,
the certification basis of the airplane, and the 747–100, 747–100B, 747–100B SUD, Renton, WA. For information on the
approval must specifically refer to this AD. 747–200B, 747–200C, 747–200F, 747– availability of this material at the FAA,
(4) For service information that contains 300, 747–400, 747–400D, 747–400F, call 425–227–1221. Boeing Alert Service
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS
steps that are labeled as Required for 747SR, and 747SP series airplanes. The Bulletin 747–28A2306, dated October 2,
Compliance (RC), the provisions of notice of proposed rulemaking (NPRM) 2014, is also available on the Internet at
paragraphs (i)(4)(i) and (i)(4)(ii) of this AD proposed to require replacing the wire
apply.
http://www.regulations.gov by searching
bundles inside the electrical conduit of for and locating Docket No. FAA–2015–
(i) The steps labeled as RC, including
substeps under an RC step and any figures
the forward and aft boost pumps of the 0935.
identified in an RC step, must be done to numbers 1 and 4 main fuel tanks with
new, improved wire bundles inserted Examining the AD Docket
comply with the AD. An AMOC is required
for any deviations to RC steps, including into conduit liners. The NPRM was You may examine the AD docket on
substeps and identified figures. prompted by several reports of chafing the Internet at http://
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the FAA proposes to amend 14 CFR part (h) Maintenance or Inspection Program 98057–3356; phone: 425–917–6505; fax: 425–
39 as follows: Revision 917–6590; email: tung.tran@faa.gov.
Within 180 days after the effective date of (2) For service information identified in
PART 39—AIRWORTHINESS this AD, revise the maintenance or inspection this AD, contact Boeing Commercial
DIRECTIVES program, as applicable, to incorporate critical Airplanes, Attention: Data & Services
design configuration control limitation Management, P.O. Box 3707, MC 2H–65,
■ 1. The authority citation for part 39 (CDCCL) Task AWL No. 28–AWL–24, ‘‘Fuel Seattle, WA 98124–2207; phone: 206–544–
5000, extension 1; fax: 206–766–5680;
continues to read as follows: Boost Pump Wires In Conduit Installation—
Internet: https://www.myboeingfleet.com.
In Fuel Tank,’’ of Sub-section C.1, ‘‘Fuel
Authority: 49 U.S.C. 106(g), 40113, 44701. You may view this referenced service
Tank Ignition Prevention,’’ of Section C.,
information at the FAA, Transport Airplane
§ 39.13 [Amended] ‘‘Airworthiness Limitations—Systems,’’ of
Directorate, 1601 Lind Avenue SW., Renton,
the Boeing 747–100/200/300/SP
■ 2. The FAA amends § 39.13 by adding Airworthiness Limitations (AWLs) and
WA. For information on the availability of
the following new airworthiness this material at the FAA, call 425–227–1221.
Certification Maintenance Requirements
directive (AD): (CMRs) Document D6–13747–CMR, Revision Issued in Renton, Washington, on February
The Boeing Company: Docket No. FAA– June 2014; or CDCCL Task No. AWL No. 28– 18, 2016.
2015–0935; Directorate Identifier 2014– AWL–35, ‘‘Fuel Boost Pump Wires In Dorr M. Anderson,
NM–243–AD. Conduit Installation—In Fuel Tank,’’ of Sub- Acting Manager, Transport Airplane
section B.1, ‘‘Fuel System Ignition Directorate, Aircraft Certification Service.
(a) Comments Due Date Prevention,’’ of Section B, ‘‘Airworthiness
Limitations (AWLs)—Systems,’’ of Section 9, [FR Doc. 2016–04681 Filed 3–7–16; 8:45 am]
We must receive comments by April 22,
2016. Airworthiness Limitations (AWLs) and BILLING CODE 4910–13–P
Certification Maintenance Requirements
(b) Affected ADs (CMRs), of Boeing 747–400 Maintenance
This AD affects AD 2011–15–03, Planning Data (MPD) Document D621U400– DEPARTMENT OF TRANSPORTATION
Amendment 39–16750 (76 FR 41659, July 15, 9, Revision June 2014; as applicable.
2011). Federal Aviation Administration
(i) No Alternative Actions, Intervals, and/or
(c) Applicability CDCCLs
14 CFR Part 39
This AD applies to The Boeing Company After accomplishing the revision required
Model 747–100, 747–100B, 747–100B SUD, by paragraph (h) of this AD, no alternative [Docket No. FAA–2016–4220; Directorate
747–200B, 747–200C, 747–200F, 747–300, actions (e.g., inspections), intervals, and/or Identifier 2015–NM–076–AD]
747–400, 747–400D, 747–400F, 747SR, and CDCCLs may be used unless the actions,
747SP series airplanes, certificated in any RIN 2120–AA64
intervals, and/or CDCCLs are approved as an
category, as identified in Boeing Alert alternative method of compliance (AMOC) in
Service Bulletin 747–28A2306, dated October Airworthiness Directives; BAE
accordance with the procedures specified in
2, 2014. paragraph (j) of this AD. Systems (Operations) Limited
Airplanes
(d) Subject (j) Alternative Methods of Compliance
Air Transport Association (ATA) of (AMOCs) AGENCY: Federal Aviation
America Code 28, Fuel. (1) The Manager, Seattle Aircraft Administration (FAA), DOT.
(e) Unsafe Condition Certification Office (ACO), FAA, has the ACTION: Notice of proposed rulemaking
This AD was prompted by several reports
authority to approve AMOCs for this AD, if (NPRM).
requested using the procedures found in 14
of chafing of the wire bundles inside the SUMMARY: We propose to supersede
CFR 39.19. In accordance with 14 CFR 39.19,
electrical conduit of the forward and aft boost
send your request to your principal inspector Airworthiness Directive (AD) 2011–24–
pumps of the numbers 1 and 4 main fuel
tanks due to high vibration. These wire or local Flight Standards District Office, as 06, for all BAE Systems (Operations)
bundles can chafe through the wire sleeving appropriate. If sending information directly Limited Model Avro 146–RJ series
into the insulation, exposing the wire to the manager of the ACO, send it to the airplanes. AD 2011–24–06 currently
conductors. We are issuing this AD to attention of the person identified in requires revising the maintenance
paragraph (k)(1) of this AD. Information may
prevent chafing of the wire bundles and program to incorporate life limits for
subsequent arcing between the wiring and be emailed to: 9-ANM-Seattle-ACO-AMOC-
Requests@faa.gov. certain items, adding new and more
the electrical conduit creating an ignition restrictive inspections to detect fatigue
source in the fuel tanks, which could result (2) Before using any approved AMOC,
notify your appropriate principal inspector, cracking in certain structures, and
in a fire and consequent fuel tank explosion.
or lacking a principal inspector, the manager adding fuel system critical design
(f) Compliance of the local flight standards district office/ configuration control limitations
Comply with this AD within the certificate holding district office. (CDCCLs) to prevent ignition sources in
compliance times specified, unless already (3) An AMOC that provides an acceptable the fuel tanks. AD 2011–24–06 also
done. level of safety may be used for any repair, currently requires modifying the main
modification, or alteration required by this
(g) Replacement fittings of the main landing gear (MLG)
AD if it is approved by the Boeing
Within 60 months after the effective date Commercial Airplanes Organization and revising the maintenance program
of this AD: Replace the wire bundles inside Designation Authorization (ODA) that has to incorporate new life limits on MLG
the electrical conduit of the forward and aft been authorized by the Manager, Seattle up-locks and door up-locks and other
boost pumps of the numbers 1 and 4 main ACO, to make those findings. To be MLG components. Since we issued AD
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS
fuel tanks with new, improved wire bundles approved, the repair method, modification 2011–24–06, we have determined that
inserted into conduit liners, in accordance deviation, or alteration deviation must meet new or revised structural inspection
with the Accomplishment Instructions of the certification basis of the airplane, and the requirements are necessary. This
Boeing Alert Service Bulletin 747–28A2306, approval must specifically refer to this AD. proposed AD would require revising the
dated October 2, 2014. Accomplishing the
replacement required by this paragraph (k) Related Information maintenance or inspection program, as
terminates the inspections required by (1) For more information about this AD, applicable, to incorporate new or
paragraphs (g), (h), and (n) of AD 2011–15– contact Tung Tran, Aerospace Engineer, revised structural inspection
03, Amendment 39–16750 (76 FR 41659, July Propulsion Branch, ANM–140S, FAA, Seattle requirements. We are proposing this AD
15, 2011). ACO, 1601 Lind Avenue SW., Renton, WA to detect and correct fatigue cracking of
VerDate Sep<11>2014 16:21 Mar 07, 2016 Jkt 238001 PO 00000 Frm 00013 Fmt 4702 Sfmt 4702 E:\FR\FM\08MRP1.SGM 08MRP1](https://thefederalregister.org/doc/81_FR_12086/page/4.svg)
Document Created: 2018-02-02 15:09:44
Document Modified: 2018-02-02 15:09:44
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period. | |
| Dates | We must receive comments on this SNPRM by April 22, 2016. | |
| 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: [email protected] | |
| FR Citation | 81 FR 12041 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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