Airworthiness Directives; The Boeing Company Airplanes, 23509-23512 [2017-10257]

Download as PDF Federal Register / Vol. 82, No. 98 / Tuesday, May 23, 2017 / Rules and Regulations Accomplishment Instructions of Boeing Alert Service Bulletin 737–53A1353, dated July 21, 2016. (1) If no crack is found: Repeat the inspections thereafter at the applicable times specified in paragraph 1.E., ‘‘Compliance,’’ of Boeing Alert Service Bulletin 737–53A1353, dated July 21, 2016. (2) If any crack is found: Do the actions specified in paragraphs (g)(2)(i) and (g)(2)(ii) of this AD. (i) Repair the crack before further flight using a method approved in accordance with the procedures specified in paragraph (i) of this AD. Although Boeing Alert Service Bulletin 737–53A1353, dated July 21, 2016, specifies to contact Boeing for repair instructions, and specifies that action as ‘‘RC’’ (Required for Compliance), this AD requires repair as specified in this paragraph. (ii) On areas that are not repaired, repeat the inspections thereafter at the applicable times specified in paragraph 1.E., ‘‘Compliance,’’ of Boeing Alert Service Bulletin 737–53A1353, dated July 21, 2016. jstallworth on DSK7TPTVN1PROD with RULES (h) Service Information Exception Where paragraph 1.E., ‘‘Compliance,’’ of Boeing Alert Service Bulletin 737–53A1353, dated July 21, 2016, specifies a compliance time ‘‘after the Original Issue date of this Service Bulletin,’’ this AD requires compliance within the specified compliance time after the effective date of this AD. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, Seattle Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ACO, send it to the attention of the person identified in paragraph (j) of this AD. Information may be emailed to: 9-ANM-Seattle-ACO-AMOCRequests@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (3) An AMOC that provides an acceptable level of safety may be used for any repair, 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. (4) Except as required by paragraph (g)(2)(i) of this AD: For service information that contains steps that are labeled as RC, the provisions of paragraphs (i)(4)(i) and (i)(4)(ii) of this AD apply. (i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. If a step or substep is VerDate Sep<11>2014 13:41 May 22, 2017 Jkt 241001 23509 labeled ‘‘RC Exempt,’’ then the RC requirement is removed from that step or substep. An AMOC is required for any deviations to RC steps, including substeps and identified figures. (ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator’s maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. DEPARTMENT OF TRANSPORTATION (j) Related Information AGENCY: For more information about this AD, contact Alan Pohl, Aerospace Engineer, Airframe Branch, ANM–120S, FAA, Seattle ACO, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425–917–6450; fax: 425– 917–6590; email: alan.pohl@faa.gov. SUMMARY: (k) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Boeing Alert Service Bulletin 737– 53A1353, dated July 21, 2016. (ii) Reserved. (3) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110–SK57, Seal Beach, CA 90740; telephone: 562–797–1717; Internet: https:// www.myboeingfleet.com. (4) You may view this 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. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http:// www.archives.gov/federal-register/cfr/ibrlocations.html. Issued in Renton, Washington, on May 10, 2017. Jeffrey E. Duven, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017–10263 Filed 5–22–17; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00019 Fmt 4700 Sfmt 4700 Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2016–9394; Directorate Identifier 2016–NM–162–AD; Amendment 39–18872; AD 2017–09–10] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 747–400, 747– 400D, and 747–400F airplanes. This AD was prompted by a report of a crack in the left wing front spar web, found following a fuel leak. This AD requires repetitive inspections for cracking of the front spar web, and repairs if necessary. We are issuing this AD to address the unsafe condition on these products. DATES: This AD is effective June 27, 2017. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of June 27, 2017. ADDRESSES: For service information identified in this final rule, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110–SK57, Seal Beach, CA 90740–5600; telephone 562–797–1717; Internet https://www.myboeingfleet.com. You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221. It is also available on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2016– 9394. Examining the AD Docket You may examine the AD docket on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2016– 9394; 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 AD, the regulatory evaluation, any comments received, and other information. The address for the Docket Office (phone: 800–647–5527) is Docket Management Facility, U.S. Department of Transportation, Docket E:\FR\FM\23MYR1.SGM 23MYR1 23510 Federal Register / Vol. 82, No. 98 / Tuesday, May 23, 2017 / Rules and Regulations Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Bill Ashforth, Aerospace Engineer, Airframe Branch, ANM–120S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057– 3356; phone: 425–917–6432; fax: 425– 917–6590; email: bill.ashforth@faa.gov. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all The Boeing Company Model 747–400, 747–400D, and 747–400F airplanes. The NPRM published in the Federal Register on December 2, 2016 (81 FR 86977) (‘‘the NPRM’’). The NPRM was prompted by a report indicating that a fuel leak in one airplane led to the discovery of a 13.4inch crack in the left wing front spar web inboard of pylon number 2 between front spar station inboard (FSSI) 655.75 and FSSI 660. The NPRM proposed to require repetitive detailed, ultrasonic, and high frequency eddy current inspections for cracking of the front spar web between FSSI 628 and FSSI 713, and repairs if necessary. We are issuing this AD to detect and correct cracking in the front spar web, which could lead to fuel leaks and a consequent fire. Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the NPRM and the FAA’s response to each comment. Support for the NPRM Boeing and commenter Melanie Smith stated that they support the NPRM. Request To Update the Labor Costs British Airways (BA), Cargolux Airlines (CLX), and KLM Royal Dutch Airlines (KLM) all stated that the actual work-hours required to do the mandated inspections are higher than the estimate listed in the NPRM. They estimated the inspections actually take between 137 and 159 work-hours, not the 55 workhours stated in the NPRM. We agree that the estimated workhours should be increased. When issuing a service bulletin, Boeing estimates work-hours under expected conditions. As operators implement the service bulletin, they may find the actual work-hours are higher or lower than estimated. We have updated the Costs of Compliance section of this AD to reflect a conservative estimate of 159 work-hours per inspection cycle. scheduled maintenance for most affected operators. Boeing is aware of the discrepancy in work-hours and is developing a request for a global alternative method of compliance (AMOC) to provide operators an alternative for both the areas of inspection and the compliance times. In addition, operators have the option of proposing an adjustment to the compliance times, supported by appropriate engineering analyses, in accordance with the provisions of paragraph (j) of this AD. We have not changed this final rule regarding this issue. Request To Change the Initial and Repetitive Compliance Times BA, CLX, and KLM all requested that we change the initial and/or repetitive compliance times to align with scheduled maintenance checks. BA proposed to do time-limited alternative inspections in the most critical web locations and to defer the majority of the web inspections to coincide with longer planned maintenance checks. CLX requested that we change the initial compliance time from 6 months to 24 months, and that we change the repetitive inspection interval from 1,200 flight cycles to 2,000 flight cycles. KLM requested that we extend the repetitive inspection intervals for Model 747 freighters from 1,200 flight cycles to 1,800 flight cycles. Each of the commenters noted that the actual workhours are higher than estimated in the NPRM, and the inspections would require additional downtime and costs if not done at the same time as regularly scheduled maintenance. None of the commenters provided engineering analyses to support their proposed extended compliance times. We disagree with the requests. In developing an appropriate compliance time for this action, we considered the urgency associated with the subject unsafe condition and the practical aspect of accomplishing the required modification within a period of time that corresponds to the normal Conclusion We reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting this AD as proposed, except for minor editorial changes. We have determined that these minor changes: • Are consistent with the intent that was proposed in the NPRM for correcting the unsafe condition; and • Do not add any additional burden upon the public than was already proposed in the NPRM. Related Service Information Under 1 CFR Part 51 We reviewed Boeing Alert Service Bulletin 747–57A2357, dated September 12, 2016. The service information describes procedures for repetitive detailed, ultrasonic, and high frequency eddy current inspections, and repairs of cracking of the front spar web between FSSI 628 and FSSI 713. 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. Costs of Compliance We estimate that this AD affects 137 airplanes of U.S. registry. We estimate the following costs to comply with this AD: ESTIMATED COSTS Labor cost Inspections ......... jstallworth on DSK7TPTVN1PROD with RULES Action 159 work-hours × $85 per hour = $13,515 per inspection cycle. We have received no definitive data that would enable us to provide cost estimates for the on-condition actions specified in this AD. VerDate Sep<11>2014 13:41 May 22, 2017 Jkt 241001 Parts cost $0 $13,515 per inspection cycle ........ Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, PO 00000 Frm 00020 Cost on U.S. operators Cost per product Fmt 4700 Sfmt 4700 $1,851,555 per inspection cycle. section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency’s authority. E:\FR\FM\23MYR1.SGM 23MYR1 Federal Register / Vol. 82, No. 98 / Tuesday, May 23, 2017 / Rules and Regulations 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 This AD will not have federalism implications under Executive Order 13132. This AD will 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 this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Is not a ‘‘significant rule’’ under 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. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 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 adding the following new airworthiness directive (AD): jstallworth on DSK7TPTVN1PROD with RULES ■ 2017–09–10 The Boeing Company: Amendment 39–18872; Docket No. FAA–2016–9394; Directorate Identifier 2016–NM–162–AD. (a) Effective Date This AD is effective June 27, 2017. VerDate Sep<11>2014 13:41 May 22, 2017 Jkt 241001 (b) Affected ADs None. (c) Applicability This AD applies to all The Boeing Company Model 747–400, 747–400D, and 747–400F airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 57, Wings. (e) Unsafe Condition This AD was prompted by a report of a 13.4-inch crack in the left wing front spar web inboard of pylon number 2 between front spar station inboard (FSSI) 655.75 and FSSI 660, found following a fuel leak. We are issuing this AD to detect and correct cracking in the front spar web, which could lead to fuel leaks and a consequent fire. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Repetitive Detailed, Ultrasonic, and High Frequency Eddy Current Inspections At the applicable time specified in paragraph 1.E., ‘‘Compliance,’’ of Boeing Alert Service Bulletin 747–57A2357, dated September 12, 2016, except as provided by paragraph (i) of this AD, do detailed, ultrasonic, and high frequency eddy current inspections for any cracking in the front spar web, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 747–57A2357, dated September 12, 2016. Repeat the inspections thereafter at the applicable time specified in paragraph 1.E., ‘‘Compliance,’’ of Boeing Alert Service Bulletin 747–57A2357, dated September 12, 2016. (h) Repair of Any Cracking If any crack is found during any inspection required by paragraph (g) of this AD, before further flight, repair using a method approved in accordance with the procedures specified in paragraph (j) of this AD. Thereafter, repeat the inspections specified in paragraph (g) of this AD at all unrepaired areas. (i) Service Information Exceptions Where paragraph 1.E., ‘‘Compliance,’’ of Boeing Alert Service Bulletin 747–57A2357, dated September 12, 2016, specifies a compliance time ‘‘after the original date of this service bulletin,’’ this AD requires compliance within the specified compliance time after the effective date 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 PO 00000 Frm 00021 Fmt 4700 Sfmt 4700 23511 paragraph (k) of this AD. Information may be emailed to: 9-ANM-Seattle-ACO-AMOCRequests@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (3) An AMOC that provides an acceptable level of safety may be used for any repair, 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. (4) Except as required by paragraph (i) of this AD: For service information that contains steps that are labeled as Required for Compliance (RC), the provisions of paragraphs (j)(4)(i) and (j)(4)(ii) of this AD apply. (i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. If a step or substep is labeled ‘‘RC Exempt,’’ then the RC requirement is removed from that step or substep. An AMOC is required for any deviations to RC steps, including substeps and identified figures. (ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator’s maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. (k) Related Information For more information about this AD, contact Bill Ashforth, Aerospace Engineer, Airframe Branch, ANM–120S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425–917–6432; fax: 425–917–6590; email: bill.ashforth@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Boeing Alert Service Bulletin 747– 57A2357, dated September 12, 2016. (ii) Reserved. (3) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110–SK57, Seal Beach, CA 90740–5600; telephone 562–797–1717; Internet https:// www.myboeingfleet.com. (4) You may view this 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. E:\FR\FM\23MYR1.SGM 23MYR1 23512 Federal Register / Vol. 82, No. 98 / Tuesday, May 23, 2017 / Rules and Regulations (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http:// www.archives.gov/federal-register/cfr/ibrlocations.html. Issued in Renton, Washington, on April 27, 2017. Paul Bernado, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017–10257 Filed 5–22–17; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2016–9439; Directorate Identifier 2016–NM–170–AD; Amendment 39–18870; AD 2017–09–08] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787–8 airplanes. This AD was prompted by a report indicating that during an airplane inspection in production, the variable frequency starter generator (VFSG) power feeder cables were found to contain terminal lugs incorrectly installed common to terminal blocks located in the wing front spar. This AD requires a general visual inspection of the wings, section 16, terminal lugs at the terminal power block of the VFSG power feeder cable for correct installation and applicable corrective actions. We are issuing this AD to address the unsafe condition on these products. SUMMARY: This AD is effective June 27, 2017. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of June 27, 2017. ADDRESSES: For service information identified in this final rule, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110–SK57, Seal Beach, CA 90740–5600; telephone: 562–797–1717; Internet: https://www.myboeingfleet.com. You may view this referenced service jstallworth on DSK7TPTVN1PROD with RULES DATES: VerDate Sep<11>2014 13:41 May 22, 2017 Jkt 241001 information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221. It is also available on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2016– 9439. short and the possible introduction of energy into the main fuel tanks. Examining the AD Docket Support for the NPRM The Air Line Pilots Association, International, expressed support for the NPRM. You may examine the AD docket on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2016– 9439; 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 AD, the regulatory evaluation, any comments received, and other information. The address for the Docket Office (phone: 800–647–5527) is Docket Management Facility, U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Brendan Shanley, Aerospace Engineer, Systems and Equipment Branch, ANM– 130S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: 425– 917–6492; fax: 425–917–6590; email: brendan.shanley@faa.gov. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain The Boeing Company Model 787–8 airplanes. The NPRM published in the Federal Register on December 16, 2016 (81 FR 91066) (‘‘the NPRM’’). The NPRM was prompted by a report indicating that during an airplane inspection in production, the VFSG power feeder cables were found to contain terminal lugs incorrectly installed common to terminal blocks located in the wing front spar. The NPRM proposed to require a general visual inspection of the wings, section 16, terminal lugs at the terminal power block of the VFSG power feeder cable for correct installation and applicable corrective actions. We are issuing this AD to detect and correct incorrectly installed terminal lugs which may contact adjacent structure and be damaged. Damaged terminal lugs could cause the potential loss of several functions essential for safe flight or electrical arcing in a flammable leakage zone, which could result in an electrical PO 00000 Frm 00022 Fmt 4700 Sfmt 4700 Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the NPRM and the FAA’s response to each comment. Request To Revise Compliance Time Boeing and All Nippon Airways (ANA) requested that we revise the compliance time specified in paragraph (g) of the proposed AD. Boeing stated that paragraph (g) of the proposed AD refers to paragraph 1.E., ‘‘Compliance,’’ of Boeing Alert Service Bulletin B787– 81205–SB240027–00, Issue 002, dated September 6, 2016 (‘‘ASB B787–81205– SB240027–00, Issue 002’’) and requested that we instead refer to paragraph 5., ‘‘Compliance,’’ of ASB B787–81205–SB240027–00, Issue 002’’ because that is the correct location for the applicable times. ANA stated that paragraph 1.E., ‘‘Compliance,’’ doesn’t exist in ASB B787–81205–SB240027– 00, Issue 002, and recommended a compliance time of ‘‘within 12 months after the effective date of this AD.’’ Boeing also recommended that the compliance time be tied to the effective date of the AD to allow operators a valid and acceptable time frame to perform the actions specified in ASB B787– 81205–SB240027–00, Issue 002. Additionally, the commenters stated that the compliance time ‘‘within 12 months after the original issue date of this service bulletin,’’ as specified in ASB B787–81205–SB240027–00, Issue 002, would put operators out of compliance upon AD issuance. We agree with the commenters. We have revised paragraph (g) of this AD to specify ‘‘Within 12 months after the effective date of this AD’’ and have removed reference to paragraph 1.E., ‘‘Compliance,’’ of ASB B787–81205– SB240027–00, Issue 002. We have determined that extending the compliance time from what was proposed will provide an acceptable level of safety. Request To Clarify the Unsafe Condition Statement Boeing requested that we revise the ‘‘Discussion’’ section of the NPRM and paragraph (e) of the proposed AD to remove information about the potential to introduce energy into the main fuel tanks and include information about E:\FR\FM\23MYR1.SGM 23MYR1

Agencies

[Federal Register Volume 82, Number 98 (Tuesday, May 23, 2017)]
[Rules and Regulations]
[Pages 23509-23512]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-10257]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-9394; Directorate Identifier 2016-NM-162-AD; 
Amendment 39-18872; AD 2017-09-10]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for all The 
Boeing Company Model 747-400, 747-400D, and 747-400F airplanes. This AD 
was prompted by a report of a crack in the left wing front spar web, 
found following a fuel leak. This AD requires repetitive inspections 
for cracking of the front spar web, and repairs if necessary. We are 
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective June 27, 2017.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of June 27, 
2017.

ADDRESSES: For service information identified in this final rule, 
contact Boeing Commercial Airplanes, Attention: Contractual & Data 
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 
90740-5600; telephone 562-797-1717; Internet https://www.myboeingfleet.com. You may view this referenced service information 
at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., 
Renton, WA. For information on the availability of this material at the 
FAA, call 425-227-1221. It is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016-
9394.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016-
9394; 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 AD, the regulatory evaluation, any comments received, and 
other information. The address for the Docket Office (phone: 800-647-
5527) is Docket Management Facility, U.S. Department of Transportation, 
Docket

[[Page 23510]]

Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Bill Ashforth, Aerospace Engineer, 
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office 
(ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6432; fax: 425-917-6590; email: bill.ashforth@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all The Boeing Company 
Model 747-400, 747-400D, and 747-400F airplanes. The NPRM published in 
the Federal Register on December 2, 2016 (81 FR 86977) (``the NPRM''). 
The NPRM was prompted by a report indicating that a fuel leak in one 
airplane led to the discovery of a 13.4-inch crack in the left wing 
front spar web inboard of pylon number 2 between front spar station 
inboard (FSSI) 655.75 and FSSI 660. The NPRM proposed to require 
repetitive detailed, ultrasonic, and high frequency eddy current 
inspections for cracking of the front spar web between FSSI 628 and 
FSSI 713, and repairs if necessary. We are issuing this AD to detect 
and correct cracking in the front spar web, which could lead to fuel 
leaks and a consequent fire.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the NPRM and 
the FAA's response to each comment.

Support for the NPRM

    Boeing and commenter Melanie Smith stated that they support the 
NPRM.

Request To Update the Labor Costs

    British Airways (BA), Cargolux Airlines (CLX), and KLM Royal Dutch 
Airlines (KLM) all stated that the actual work-hours required to do the 
mandated inspections are higher than the estimate listed in the NPRM. 
They estimated the inspections actually take between 137 and 159 work-
hours, not the 55 work-hours stated in the NPRM.
    We agree that the estimated work-hours should be increased. When 
issuing a service bulletin, Boeing estimates work-hours under expected 
conditions. As operators implement the service bulletin, they may find 
the actual work-hours are higher or lower than estimated. We have 
updated the Costs of Compliance section of this AD to reflect a 
conservative estimate of 159 work-hours per inspection cycle.

Request To Change the Initial and Repetitive Compliance Times

    BA, CLX, and KLM all requested that we change the initial and/or 
repetitive compliance times to align with scheduled maintenance checks. 
BA proposed to do time-limited alternative inspections in the most 
critical web locations and to defer the majority of the web inspections 
to coincide with longer planned maintenance checks. CLX requested that 
we change the initial compliance time from 6 months to 24 months, and 
that we change the repetitive inspection interval from 1,200 flight 
cycles to 2,000 flight cycles. KLM requested that we extend the 
repetitive inspection intervals for Model 747 freighters from 1,200 
flight cycles to 1,800 flight cycles. Each of the commenters noted that 
the actual work-hours are higher than estimated in the NPRM, and the 
inspections would require additional downtime and costs if not done at 
the same time as regularly scheduled maintenance. None of the 
commenters provided engineering analyses to support their proposed 
extended compliance times.
    We disagree with the requests. In developing an appropriate 
compliance time for this action, we considered the urgency associated 
with the subject unsafe condition and the practical aspect of 
accomplishing the required modification within a period of time that 
corresponds to the normal scheduled maintenance for most affected 
operators. Boeing is aware of the discrepancy in work-hours and is 
developing a request for a global alternative method of compliance 
(AMOC) to provide operators an alternative for both the areas of 
inspection and the compliance times. In addition, operators have the 
option of proposing an adjustment to the compliance times, supported by 
appropriate engineering analyses, in accordance with the provisions of 
paragraph (j) of this AD. We have not changed this final rule regarding 
this issue.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this AD as proposed, except for minor editorial changes. We have 
determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Alert Service Bulletin 747-57A2357, dated 
September 12, 2016. The service information describes procedures for 
repetitive detailed, ultrasonic, and high frequency eddy current 
inspections, and repairs of cracking of the front spar web between FSSI 
628 and FSSI 713. 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.

Costs of Compliance

    We estimate that this AD affects 137 airplanes of U.S. registry. We 
estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
              Action                    Labor cost        Parts cost      Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Inspections......................  159 work-hours x                 $0  $13,515 per          $1,851,555 per
                                    $85 per hour =                       inspection cycle.    inspection cycle.
                                    $13,515 per
                                    inspection cycle.
----------------------------------------------------------------------------------------------------------------

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

[[Page 23511]]

    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

    This AD will not have federalism implications under Executive Order 
13132. This AD will 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 this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under 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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 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):

2017-09-10 The Boeing Company: Amendment 39-18872; Docket No. FAA-
2016-9394; Directorate Identifier 2016-NM-162-AD.

(a) Effective Date

    This AD is effective June 27, 2017.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all The Boeing Company Model 747-400, 747-
400D, and 747-400F airplanes, certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 57, Wings.

(e) Unsafe Condition

    This AD was prompted by a report of a 13.4-inch crack in the 
left wing front spar web inboard of pylon number 2 between front 
spar station inboard (FSSI) 655.75 and FSSI 660, found following a 
fuel leak. We are issuing this AD to detect and correct cracking in 
the front spar web, which could lead to fuel leaks and a consequent 
fire.

(f) Compliance

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

(g) Repetitive Detailed, Ultrasonic, and High Frequency Eddy Current 
Inspections

    At the applicable time specified in paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 747-57A2357, dated 
September 12, 2016, except as provided by paragraph (i) of this AD, 
do detailed, ultrasonic, and high frequency eddy current inspections 
for any cracking in the front spar web, in accordance with the 
Accomplishment Instructions of Boeing Alert Service Bulletin 747-
57A2357, dated September 12, 2016. Repeat the inspections thereafter 
at the applicable time specified in paragraph 1.E., ``Compliance,'' 
of Boeing Alert Service Bulletin 747-57A2357, dated September 12, 
2016.

(h) Repair of Any Cracking

    If any crack is found during any inspection required by 
paragraph (g) of this AD, before further flight, repair using a 
method approved in accordance with the procedures specified in 
paragraph (j) of this AD. Thereafter, repeat the inspections 
specified in paragraph (g) of this AD at all unrepaired areas.

(i) Service Information Exceptions

    Where paragraph 1.E., ``Compliance,'' of Boeing Alert Service 
Bulletin 747-57A2357, dated September 12, 2016, specifies a 
compliance time ``after the original date of this service 
bulletin,'' this AD requires compliance within the specified 
compliance time after the effective date 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) of this AD. 
Information may be emailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair, 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.
    (4) Except as required by paragraph (i) of this AD: For service 
information that contains steps that are labeled as Required for 
Compliance (RC), the provisions of paragraphs (j)(4)(i) and 
(j)(4)(ii) of this AD apply.
    (i) The steps labeled as RC, including substeps under an RC step 
and any figures identified in an RC step, must be done to comply 
with the AD. If a step or substep is labeled ``RC Exempt,'' then the 
RC requirement is removed from that step or substep. An AMOC is 
required for any deviations to RC steps, including substeps and 
identified figures.
    (ii) Steps not labeled as RC may be deviated from using accepted 
methods in accordance with the operator's maintenance or inspection 
program without obtaining approval of an AMOC, provided the RC 
steps, including substeps and identified figures, can still be done 
as specified, and the airplane can be put back in an airworthy 
condition.

(k) Related Information

    For more information about this AD, contact Bill Ashforth, 
Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft 
Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 98057-
3356; phone: 425-917-6432; fax: 425-917-6590; email: 
bill.ashforth@faa.gov.

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Boeing Alert Service Bulletin 747-57A2357, dated September 
12, 2016.
    (ii) Reserved.
    (3) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-
5600; telephone 562-797-1717; Internet https://www.myboeingfleet.com.
    (4) You may view this 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.

[[Page 23512]]

    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Renton, Washington, on April 27, 2017.
Paul Bernado,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-10257 Filed 5-22-17; 8:45 am]
BILLING CODE 4910-13-P