{"id":"F2010L00087","name":"AD/B747/51 - Fuselage Frames - Aft Cargo Bay - CANCELLED","slug":"ad-b747-51-fuselage-frames-aft-cargo-bay-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":122779,"registerId":"commonwealth-F2010L00087-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 747 Series Aeroplanes","sectionType":"division","heading":"Boeing 747 Series Aeroplanes","content":"### Boeing 747 Series Aeroplanes\n\n| AD/B747/51 | Fuselage Frames - Aft Cargo Bay | 1/2010 |\n| ---------- | ------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                            |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 14 January 2010.                                                                                                                                                                                                                                              |\n| Background:  | A State of Design airworthiness directive issued on or after 1 October 2009 is defined as an airworthiness directive per CASR Part 39.001A. The requirements of this airworthiness directive have been superseded by FAA AD 2009-25-11 Amendment 39-16131 issued on 10 December 2009. |\n\n![](image.001.png)\n\nMike Higgins  \nDelegate of the Civil Aviation Safety Authority\n\n5 January 2010","sortOrder":0},{"sectionNumber":"AD/B747/51","sectionType":"part","heading":"AD/B747/51","content":"## AD/B747/51","sortOrder":1},{"sectionNumber":"Fuselage Frames - Aft Cargo Bay","sectionType":"part","heading":"Fuselage Frames - Aft Cargo Bay","content":"## Fuselage Frames \\- Aft Cargo Bay","sortOrder":2},{"sectionNumber":"1/2010","sectionType":"part","heading":"1/2010","content":"## 1/2010","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1912},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument terminates a previous regulatory requirement but does not introduce new substantive obligations or expand regulatory scope; it simply removes a redundant requirement that has been replaced by an equivalent foreign airworthiness directive."},"complexity_factors":["Single operative provision (cancellation)","No substantive legal obligations imposed","No defined terms or interpretative provisions","Minimal cross-referencing (one FAA directive)"],"plain_english_summary":"This instrument **cancels** a previous aviation safety directive (AD/B747/51) that applied to Boeing 747 aircraft.\n\n**What it means:**\n- The old rule about inspecting or repairing fuselage frames in the aft (rear) cargo bay no longer applies\n- From 14 January 2010, this Australian directive is formally withdrawn\n\n**Why it changed:**\nThe United States Federal Aviation Administration (FAA) issued a new directive (FAA AD 2009-25-11) on 10 December 2009 that covers the same safety issue. Australian regulations now recognise FAA directives issued after 1 October 2009 as valid airworthiness directives under CASR Part 39, so the separate Australian rule is no longer needed.\n\n**Who is affected:**\nOwners and operators of Boeing 747 series aircraft. They must now comply with the FAA directive instead of this cancelled Australian rule."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-51-fuselage-frames-aft-cargo-bay-cancelled","history":"/api/acts/ad-b747-51-fuselage-frames-aft-cargo-bay-cancelled/history","analysis":"/api/acts/ad-b747-51-fuselage-frames-aft-cargo-bay-cancelled/analysis","conflicts":"/api/acts/ad-b747-51-fuselage-frames-aft-cargo-bay-cancelled/conflicts","importantCases":"/api/acts/ad-b747-51-fuselage-frames-aft-cargo-bay-cancelled/important-cases","documents":"/api/acts/ad-b747-51-fuselage-frames-aft-cargo-bay-cancelled/documents"}}