AD 2020-14-02

The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to all 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. As published, the AD number and Amendment number specified in the preamble and regulatory text are incorrect. This document corrects that error. In all other respects, the original document remains the same.

Final rule; correction.

2020-14-02 The Boeing Company: Amendment 39-21156; Docket No. FAA-2019-0990; Product Identifier 2019-NM-122-AD.\n\n(a) Effective Date\n\n This AD is effective July 28, 2020.\n\n(b) Affected ADs\n\n None.\n\n(c) Applicability\n\n This AD applies to all The Boeing Company Model 747-100, 747-\n100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, \n747-400D, 747-400F, 747SR, and 747SP series airplanes, certificated \nin any category.\n\n(d) Subject\n\n Air Transport Association (ATA) of America Code 53, Fuselage.\n\n(e) Unsafe Condition\n\n This AD was prompted by reports of cracking in particular areas \nof the bulkhead structure at body station (BS) 2598. The FAA is \nissuing this AD to address fatigue cracking of the BS 2598 bulkhead \nstructure, which could adversely affect the structural integrity of \nthe bulkhead and the horizontal stabilizer support structure, and \nresult in loss of controllability of the airplane.\n\n(f) Compliance\n\n Comply withthis AD within the compliance times specified, \nunless already done.\n\n(g) Required Actions\n\n Except as specified by paragraph (h) of this AD: At the \napplicable times specified in the ''Compliance'' paragraph of Boeing \nAlert Requirements Bulletin 747-53A2899 RB, Revision 1, dated April \n7, 2020, do all applicable actions identified in, and in accordance \nwith, the Accomplishment Instructions of Boeing Alert Requirements \nBulletin 747-53A2899 RB, Revision 1, dated April 7, 2020.\n\n Note 1 to paragraph (g): Guidance for accomplishing the actions \nrequired by this AD can be found in Boeing Alert Service Bulletin \n747-53A2899, Revision 1, dated April 7, 2020, which is referred to \nin Boeing Alert Requirements Bulletin 747-53A2899 RB, Revision 1, \ndated April 7, 2020.\n\n(h) Exceptions to Service Information Specifications\n\n (1) For purposes of determining compliance with the requirements \nof this AD: Where Boeing Alert Requirements Bulletin 747-53A2899 RB, \nRevision 1, dated April 7, 2020, uses the phrase ''the original \nissue date of Requirements Bulletin 747-53A2899 RB,'' this AD \nrequires using ''the effective date of this AD.''\n (2) Where Boeing Alert Requirements Bulletin 747-53A2899 RB, \nRevision 1, dated April 7, 2020, specifies contacting Boeing for \nrepair instructions: This AD requires doing the repair using a \nmethod approved in accordance with the procedures specified in \nparagraph (j) of this AD.\n\n(i) Credit for Previous Actions\n\n This paragraph provides credit for the actions specified in \nparagraph (g) of this AD, if those actions were performed before the \neffective date of this AD using Boeing Alert Requirements Bulletin \n747-53A2899 RB, dated April 5, 2019.\n\n(j) Alternative Methods of Compliance (AMOCs)\n\n (1) The Manager, Seattle ACO Branch, FAA, has the authority to \napprove AMOCs for this AD, if requested using the procedures found \nin 14 CFR 39.19. In accordance with 14 CFR 39.19, send yourrequest \nto your principal inspector or local Flight Standards District \nOffice, as appropriate. If sending information directly to the \nmanager of the certification office, send it to the attention of the \nperson identified in paragraph (k)(1) of this AD. Information may be \nemailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.\n (2) Before using any approved AMOC, notify your appropriate \nprincipal inspector, or lacking a principal inspector, the manager \nof the local flight standards district office/certificate holding \ndistrict office.\n (3) An AMOC that provides an acceptable level of safety may be \nused for any repair, modification, or alteration required by this AD \nif it is approved by The Boeing Company Organization Designation \nAuthorization (ODA) that has been authorized by the Manager, Seattle \nACO Branch, FAA, to make those findings. To be approved, the repair \nmethod, modification deviation, or alteration deviation must meet \nthe certification basis ofthe airplane, and the approval must \nspecifically refer to this AD.\n\n(k) Related Information\n\n (1) For more information about this AD, contact Eric Lin, \nAerospace Engineer, Airframe Section, FAA, Seattle ACO Branch, 2200 \nSouth 216th St., Des Moines, WA 98198; phone and fax: 206-231-3523; \nemail: eric.lin@faa.gov.\n (2) Service information identified in this AD that is not \nincorporated by reference is available at the addresses specified in \nparagraphs (l)(4) and (5) of this AD.\n\n(l) Material Incorporated by Reference\n\n (1) The Director of the Federal Register approved the \nincorporation by reference (IBR) of the service information listed \nin this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.\n (2) You must use this service information as applicable to do \nthe actions required by this AD, unless this AD specifies otherwise.\n (3) The following service information was approved for IBR on \nJuly 28, 2020 (85 FR 37547, June 23, 2020).\n (i) Boeing Alert Requirements Bulletin 747-53A2899 RB, Revision \n1, dated April 7, 2020.\n (ii) (Reserved)\n (4) For service information identified in this AD, contact \nBoeing Commercial Airplanes, Attention: Contractual & Data Services \n(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-\n5600; phone: 562-797-1717; internet: https://www.myboeingfleet.com.\n (5) You may view this service information at the FAA, \nAirworthiness Products Section, Operational Safety Branch, 2200 \nSouth 216th St., Des Moines, WA. For information on the availability \nof this material at the FAA, call 206-231-3195.\n (6) You may view this service information that is incorporated \nby reference at the National Archives and Records Administration \n(NARA). For information on the availability of this material at \nNARA, email fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

This AD requires repetitive detailed inspections and open hole high frequency eddy current (HFEC) inspections of the upper splice fittings for cracks and applicable on-condition actions for all 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.\n\nNeed for the Correction\n\n As published on June 23, 2020 (85 FR 37547), the AD and Amendment numbers for this AD specified in the preamble and regulatory text are incorrect. The incorrectly specified AD number was AD 2020-12-10 and the incorrectly specified Amendment number was 39-19919; AD number AD 2020-12-10 is assigned to another AD addressing a Bell Textron Inc. helicopter unsafe condition, Amendment 39-21145 (85 FR 35555, June 11, 2020). The correct AD number for this AD is AD 2020-14-02 and the correct Amendment number is 39-21156.\n\nRelated Service Information Under 1 CFR Part 51\n\n The FAA reviewed Boeing Alert Requirements Bulletin 747-53A2899 RB, Revision 1, dated April 7, 2020. This service information describes procedures for repetitive detailed inspections and open hole HFEC \ninspections of the left and right upper splice fittings for cracks and applicable on-condition actions. On-condition actions include repair. This service information is reasonably available because the interested \nparties have access to it through their normal course of business or by the means identified in the ADDRESSES section.\n\nCorrection of Publication\n\n This document corrects an error and correctly adds the AD as an amendment to 14 CFR 39.13. Although no other part of the preamble or regulatory information has been corrected, the FAA is publishing the \nentire rule in the Federal Register.\n The effective date of this AD remains July 28, 2020.\n Since this action only corrects the AD number and amendment number, it has no adverse economic impact and imposes no additional burden on any person. Therefore, the FAA has determined that notice and public comment procedures are unnecessary.\n\nList of Subjects in 14 CFR Part 39\n\n Air transportation, Aircraft, Aviation safety, Incorporation by \nreference, Safety.\n\nAdoption of the Correction\n\n Accordingly, pursuant to the authority delegated to me by the \nAdministrator, the Federal Aviation Administration amends part 39 of \nthe Federal Aviation Regulations (14 CFR part 39) as follows:\n\nPART 39--AIRWORTHINESS DIRECTIVES\n\n0\n1. The authority citation for part 39 continues to read as follows:\n\n Authority: 49 U.S.C. 106(g), 40113, 44701.\n\n\nSec. 39.13 (Corrected)