2024-12-07: Fuselage

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2024-12-07 The Boeing Company: Amendment 39-22771; Docket No. FAA-2024-1687; Project Identifier AD-2024-00253-T. (a) Effective Date This airworthiness directive (AD) is effective July 11, 2024. (b) Affected ADs None. (c) Applicability This AD applies to The Boeing Company Model 757-200 airplanes, certificated in any category, modified by supplemental type certificate ST01529SE or ST02278SE. (d) Subject Air Transport Association (ATA) of America Code 53, Fuselage. (e) Unsafe Condition This AD was prompted by reports of cracking in the structure in and around the lavatory service panel. The FAA is issuing this AD to address cracks in and around the lavatory service panel. The unsafe condition, if not addressed, could result in an in-flight depressurization of the airplane and reduced structural integrity of the aircraft. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with the Accomplishment Instructions of Precision Conversions Service Bulletin PC-757-53A0005, Revision 2, dated May 7, 2024. (h) Exceptions to Service Information Specifications (1) Where the table in the "Compliance" paragraph of Precision Conversions Service Bulletin PC-757-53A0005, Revision 2, dated May 7, 2024, refers to the original issue date of this service bulletin, this AD requires using the effective date of this AD. (2) Where the table in the "Compliance" paragraph of Precision Conversions Service Bulletin PC-757-53A0005, Revision 2, dated May 7, 2024, specifies in Condition 2 Option 1 to repetitively inspect if no cracks are found, this AD does not allow repetitive inspections and requires installing reinforcement within 2,000 flight cycles after the initial inspection in accordance with Paragraph III, Part 3, Reinforcement, of Precision Conversions Service Bulletin PC-757-53A0005, Revision 2, dated May 7, 2024. (3) Where Precision Conversions Service Bulletin PC-757-53A0005, Revision 2, dated May 7, 2024, specifies contacting Precision Engineering for instructions when specific conditions are found, this AD requires complying with those instructions by using a method approved in accordance with the procedures specified in paragraph (i) of this AD. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, West Certification Branch, 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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j) 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 responsible Flight Standards 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 Company Organization Designation Authorization (ODA) that has been authorized by the Manager, AIR-520, Continued Operational Safety Branch, FAA, 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 (h) of this AD: For material that contains steps that are labeled as Required for Compliance (RC), the provisions of paragraphs (i)(4)(i) and (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. (j) Related Information For more information about this AD, contact Joseph Zuklic, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone 206-231-3858; email [email protected]. (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 material as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Precision Conversions Service Bulletin PC-757-53A0005, Revision 2, dated May 7, 2024. (ii) [Reserved] (3) For Precision Conversions LLC material, contact Precision Conversions LLC, 9800 SW Nimbus Ave, Beaverton, OR 97008; ATTN: Brent VanFossen; phone 503-601-3001; email [email protected]. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th Street, Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected]. Issued on June 11, 2024. Suzanne Masterson, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2024-13936 Filed 6-21-24; 11:15 am]BILLING CODE 4910-13-P