{"id":"F2006B03121","name":"AD/B747/220 - Body Station 1265 Edge Frame","slug":"ad-b747-220-body-station-1265-edge-frame","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42493,"registerId":"commonwealth-F2006B03121-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 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.","sortOrder":0},{"sectionNumber":"AD/B747/220 Body Station 1265 Edge Frame","sectionType":"part","heading":"AD/B747/220 Body Station 1265 Edge Frame 4/2000","content":"# AD/B747/220 Body Station 1265 Edge Frame 4/2000\n\nApplicability: Model 747 series aircraft, as listed in Boeing Alert Service Bulletin 747-53A2416, Revision 1, dated 6 May 1999.\n\nRequirement: Action in accordance with the technical requirements of FAA AD 2000-02-10 Amdt 39-11529.\n\nCompliance: As specified in the Requirement document for the initial and repetitive inspections, with a revised effective date of 20 April 2000.\n\nThis Airworthiness Directive becomes effective on 20 April 2000.\n\nBackground: The FAA received reports of fatigue cracks at the inner chord and web of the body station 1265 edge frame between stringers 23 and 27. Such cracking could result in rapid decompression of the aircraft.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.003.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 9 March 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 22 March 2000.","sortOrder":1}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2086},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is the original issuance of the directive, targeting a specific identified safety issue (fatigue cracking in a particular fuselage frame) in specific Boeing 747 aircraft. The scope remains limited to the original safety concern without expansion to unrelated aircraft systems or models."},"complexity_factors":["Short, single-issue directive (approximately 200 words)","Incorporates external technical standard by reference (FAA AD 2000-02-10) rather than spelling out requirements in the text","No defined terms section, exceptions, or conditional logic","Precise mechanical applicability limited to specific aircraft model and service bulletin"],"plain_english_summary":"**What this does:**\nThis safety directive requires operators of specific Boeing 747 aircraft to inspect and fix dangerous cracks in the fuselage frame.\n\n**Who it affects:**\nOwners and operators of Model 747 series aircraft listed in Boeing Alert Service Bulletin 747-53A2416, Revision 1.\n\n**The safety problem:**\nFatigue cracks have been discovered in the \"body station 1265 edge frame\" (a structural part of the aircraft body between supports called stringers 23 and 27). If these cracks spread, they could cause **rapid decompression** — a sudden and dangerous loss of cabin pressure during flight.\n\n**What must be done:**\nOperators must follow the technical instructions in American aviation safety directive **FAA AD 2000-02-10**. This includes:\n- Initial inspections of the affected area\n- Ongoing repetitive inspections to catch new cracks\n- Repairing any cracks found\n\n**When:**\nThe directive took effect on 20 April 2000."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-220-body-station-1265-edge-frame","history":"/api/acts/ad-b747-220-body-station-1265-edge-frame/history","analysis":"/api/acts/ad-b747-220-body-station-1265-edge-frame/analysis","conflicts":"/api/acts/ad-b747-220-body-station-1265-edge-frame/conflicts","importantCases":"/api/acts/ad-b747-220-body-station-1265-edge-frame/important-cases","documents":"/api/acts/ad-b747-220-body-station-1265-edge-frame/documents"}}