{"id":"F2006B03261","name":"AD/B747/83 - Fuel Tank Access Doors","slug":"ad-b747-83-fuel-tank-access-doors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42685,"registerId":"commonwealth-F2006B03261-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B747/83 - Fuel Tank Access Doors","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Boeing 747 Series Aeroplanes\n\n \n\nAD/B747/83 Fuel Tank Access Doors 12/90\n\nApplicability: All 747 with line numbers 001-678, 680-684, 686-720 except 747-400 model. Requirement:               Action in accordance with Boeing Alert SB 747-28A2117 Revision 2, First Phase and\n\nSecond Phase.\n\n \n\nNote: FAA AD 89-12-10 Amendment 39-6230 and FAR 25.963(e) refer.\n\n \n\nCompliance: First Phase: Prior to 31 December 1990.\n\n \n\nSecond Phase: Prior to 31 October 1992.\n\n \n\nBackground:  Country of origin AD. Enables compliance with FAR 25.963(e) which provides for fuel tank access panels to have a higher resistance to impact to reduce possibility of penetration from engine debris or objects thrown by the aircraft tyres.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2039},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow technical scope regarding fuel tank access door impact resistance modifications for specific Boeing 747 models."},"complexity_factors":["Incorporation by reference of external technical standard (Boeing Alert SB 747-28A2117 Revision 2)","Bifurcated compliance structure with two distinct implementation phases and separate deadlines","Narrow applicability limited to specific aircraft line numbers (manufacturing serial numbers)","Cross-reference to international aviation safety standards (FAR 25.963(e))"],"plain_english_summary":"This directive requires operators of specified Boeing 747 line numbers (001–678, 680–684, 686–720; excluding 747‑400) to reinforce fuel tank access doors per Boeing Alert Service Bulletin 747‑28A2117 Revision 2. Work is staged in two phases with completion deadlines of 31 December 1990 and 31 October 1992. The upgrades protect tanks from engine or tyre‑thrown debris, preventing fuel leaks or fire and meeting international safety standards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-83-fuel-tank-access-doors","history":"/api/acts/ad-b747-83-fuel-tank-access-doors/history","analysis":"/api/acts/ad-b747-83-fuel-tank-access-doors/analysis","conflicts":"/api/acts/ad-b747-83-fuel-tank-access-doors/conflicts","importantCases":"/api/acts/ad-b747-83-fuel-tank-access-doors/important-cases","documents":"/api/acts/ad-b747-83-fuel-tank-access-doors/documents"}}