{"id":"F2010L00088","name":"AD/B747/52 - Lower Fuselage Frames - CANCELLED","slug":"ad-b747-52-lower-fuselage-frames-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":122781,"registerId":"commonwealth-F2010L00088-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 747 Series Aeroplanes","sectionType":"division","heading":"Boeing 747 Series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/B747/52 | Lower Fuselage Frames | 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 The requirements of this airworthiness directive have been superseded by FAA AD 2009-25-11 Amendment39-16131 issued on 10 December 2009.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/B747/52","sectionType":"part","heading":"AD/B747/52","content":"## AD/B747/52","sortOrder":1},{"sectionNumber":"Lower Fuselage Frames","sectionType":"part","heading":"Lower Fuselage Frames","content":"## Lower Fuselage Frames","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":1761},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument does not expand or alter the scope of the original legislation; it terminates the entire instrument by cancelling the previous airworthiness directive. The regulatory scope is reduced to nil as the directive is no longer in force."},"complexity_factors":["Single operative provision (cancellation of previous instrument)","No defined terms or interpretation section","No procedural steps, conditions, or exceptions","Document consists solely of administrative machinery and background context"],"plain_english_summary":"**What this is:** This document cancels a previous Australian airworthiness directive (AD) that required maintenance or inspections of lower fuselage frames on Boeing 747 aircraft.\n\n**What it does:** It officially terminates Airworthiness Directive AD/B747/52. From 14 January 2010 onwards, the requirements in that directive no longer apply to aircraft operators.\n\n**Why it matters:** Australian owners of Boeing 747s no longer need to follow the specific maintenance rules that were in this directive. The requirements have been replaced by a newer US Federal Aviation Administration (FAA) safety directive (FAA AD 2009-25-11), which now governs how operators must address safety issues with these fuselage frames.\n\n**Who it affects:** Australian aircraft operators and maintenance organisations responsible for Boeing 747 series aircraft that were previously subject to this maintenance requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-52-lower-fuselage-frames-cancelled","history":"/api/acts/ad-b747-52-lower-fuselage-frames-cancelled/history","analysis":"/api/acts/ad-b747-52-lower-fuselage-frames-cancelled/analysis","conflicts":"/api/acts/ad-b747-52-lower-fuselage-frames-cancelled/conflicts","importantCases":"/api/acts/ad-b747-52-lower-fuselage-frames-cancelled/important-cases","documents":"/api/acts/ad-b747-52-lower-fuselage-frames-cancelled/documents"}}