{"id":"F2005L03180","name":"AD/B747/139 - Ageing Aircraft Structural Inspection Programme - CANCELLED","slug":"ad-b747-139-ageing-aircraft-structural-inspection-programme-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":134442,"registerId":"commonwealth-F2005L03180-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 747 Series Aeroplanes","sectionType":"division","heading":"Boeing 747 Series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/B747/139 | Ageing Aircraft StructuralInspection Programme | 12/2005 |\n| ----------- | ---------------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                     |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 24 November 2005.                                                                                                                                                      |\n| Background:  | The requirements of this AD are contained in AD/B747/79 (latest amendment), which refers to the latest Boeing documents relating to the Boeing Structural Modification and Inspection program. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n12 October 2005","sortOrder":0},{"sectionNumber":"AD/B747/139","sectionType":"part","heading":"AD/B747/139","content":"## AD/B747/139","sortOrder":1},{"sectionNumber":"Ageing Aircraft StructuralInspection Pro","sectionType":"part","heading":"Ageing Aircraft StructuralInspection Programme","content":"## Ageing Aircraft Structural  \nInspection Programme","sortOrder":2},{"sectionNumber":"12/2005","sectionType":"part","heading":"12/2005","content":"## 12/2005","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3002},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is an administrative consolidation. The original purpose was to mandate structural inspections for ageing Boeing 747s. While this specific instrument no longer imposes requirements (having been cancelled), the substantive safety obligations remain in force under AD/B747/79. The scope of regulated activity has not expanded beyond the original safety intent."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","Only one external reference (to AD/B747/79)","No conditions, exceptions, or procedural requirements"],"plain_english_summary":"**What this does**\nThis document cancels an older airworthiness directive (AD/B747/139) that required special structural inspections for ageing Boeing 747 aircraft.\n\n**Key terms**\nAn *airworthiness directive* is a mandatory safety instruction issued by the Civil Aviation Safety Authority (CASA). Compliance is legally required for aircraft to fly in Australia.\n\n**What it means for operators**\nIf you own or operate a Boeing 747, you still need to follow the ageing aircraft inspection rules. However, you should now look at **AD/B747/79** (and its latest amendments) instead of this document. That directive contains the current Boeing documentation for the Structural Modification and Inspection Programme.\n\n**Why it changed**\nThe safety requirements haven't been removed—they've simply been consolidated into a different directive to avoid duplication and ensure operators are referring to the most current Boeing standards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-139-ageing-aircraft-structural-inspection-programme-cancelled","history":"/api/acts/ad-b747-139-ageing-aircraft-structural-inspection-programme-cancelled/history","analysis":"/api/acts/ad-b747-139-ageing-aircraft-structural-inspection-programme-cancelled/analysis","conflicts":"/api/acts/ad-b747-139-ageing-aircraft-structural-inspection-programme-cancelled/conflicts","importantCases":"/api/acts/ad-b747-139-ageing-aircraft-structural-inspection-programme-cancelled/important-cases","documents":"/api/acts/ad-b747-139-ageing-aircraft-structural-inspection-programme-cancelled/documents"}}