{"id":"F2006B03316","name":"AD/B767/14 Amdt 1 - Fin Access Door","slug":"ad-b767-14-amdt-1-fin-access-door","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42753,"registerId":"commonwealth-F2006B03316-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/14 Amdt 1 - Fin Access Door","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nOn the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B767/14 and issues the following AD under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nBoeing 767 Series Aeroplanes\n\nAD/B767/14\n\nAmdt 1\n\n  \nFin Access Door 1/2005\n\nApplicability: All models.\n\nRequirement: Action in accordance with Boeing S.B. 767-52-0042 Rev 02 or later FAA approved revision.\n\nNote: FAA AD 86-19-07 refers.\n\nCompliance: Prior to 30 November 1987.\n\nThis Amendment becomes effective on 20 January 2005.\n\nBackground: This modification is to ensure that the vertical fin will not fail in the event of rupture of the aft pressure bulkhead.\n\nThis amendment is issued to update the referenced service bulletin revision status. All Australian registered aircraft should have already complied with this AD. The amendment is issued so that no confusion will occur in the future about which revision of the service bulletin should have been used to accomplish the modification.\n\nThe original issue of this AD became effective on 30 November 1986.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 3 December 2004\n\n![](image.001.png)\n\nThe above AD is notified in the Commonwealth of Australia Gazette on 22 December 2004.\n\n  \n\nPage 1 of 1","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The amendment does not widen or narrow the AD's technical scope or applicability. It updates the referenced Boeing service bulletin revision to Rev 02 (or later FAA‑approved revision) to remove ambiguity about which revision must be used; the required modification, affected fleet (all B767 models), and the compliance intent remain the same (Requirement; Applicability; Background)."},"complexity_factors":["Technical dependency on an external manufacturer Service Bulletin (Boeing SB 767-52-0042 Rev 02) rather than full textual detail in the AD (Requirement).","Cross-reference to FAA material (FAA AD 86-19-07) creates inter-jurisdictional linkage and reliance on FAA-approved revisions (Note/Requirement).","Regulatory action is a revocation and re-issue to clarify the referenced revision, which is procedural rather than substantive (Background).","Retroactive compliance timing: the stated compliance deadline (prior to 30 November 1987) is historical, which affects archival/legal clarity but not contemporary operational change (Compliance).","Applicability is broad (all Boeing 767 models), simplifying scope but potentially implicating many operators (Applicability).","Limited administrative discretion: the CASA delegate prescribes mandatory compliance without alternative compliance pathways in the text (preamble/signature)."],"plain_english_summary":"This AD requires all operators of Boeing 767 aeroplanes to modify the fin access door in accordance with Boeing Service Bulletin 767-52-0042 Rev 02 (or a later FAA‑approved revision) to prevent vertical fin failure if the aft pressure bulkhead ruptures (Requirement). Aircraft owners/operators pay for and carry out the work and must have complied by the specified date (Compliance). The amendment only updates which service bulletin revision to use; it does not add new kinds of work."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The amendment maintains identical scope to the original 1986 directive. It is purely a technical update to the referenced service bulletin revision status, explicitly stating that 'no confusion will occur in the future about which revision of the service bulletin should have been used.' The substantive safety requirement and affected aircraft population remain unchanged."},"complexity_factors":["Single, specific technical requirement referencing an external Boeing service bulletin","No defined terms section or interpretation provisions","Minimal conditional logic—straightforward applicability ('All models') and single compliance deadline","No cross-references to other legislation beyond the enabling regulation (CASR 1998)","Short document (1 page) with clear structural sections (Applicability, Requirement, Compliance, Background)","Amendment is administrative only—updates reference number without changing substantive obligation"],"plain_english_summary":"This safety order mandates a specific repair to the fin access door on Australian-registered Boeing 767s, requiring operators and maintenance organisations to follow Boeing Service Bulletin 767-52-0042 (Rev. 2 or later). The modification prevents the vertical tail fin from separating if the rear pressure bulkhead ruptures—a failure that could cause a crash. The 2005 amendment only updates the approved SB revision; the original 1986 order and 1987 compliance deadline remain."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-14-amdt-1-fin-access-door","history":"/api/acts/ad-b767-14-amdt-1-fin-access-door/history","analysis":"/api/acts/ad-b767-14-amdt-1-fin-access-door/analysis","conflicts":"/api/acts/ad-b767-14-amdt-1-fin-access-door/conflicts","importantCases":"/api/acts/ad-b767-14-amdt-1-fin-access-door/important-cases","documents":"/api/acts/ad-b767-14-amdt-1-fin-access-door/documents"}}