{"id":"F2006B08916","name":"AD/DH 90/1 - Fire Precaution Measures on Refuelling","slug":"ad-dh-90-1-fire-precaution-measures-on-refuelling","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52461,"registerId":"commonwealth-F2006B08916-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DH 90/1 - Fire Precaution Measures on Refuelling","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)  DH 90 (Dragonfly) Series Aeroplanes\n\n \n\nAD/DH 90/1 Fire Precaution Measures on Refuelling NK\n\nApplicability: All models.\n\n \n\nRequirement: 1. Rework the inlet manifold drain lines to discharge to the side of the trouser cowls remote from the exhaust stack.\n\n \n\n2. During refuelling, provide positive means to prevent any spilled fuel from entering the stub wings or trouser cowls; or\n\n \n\n3. ANO 105.1.14.11.5.1.\n\n \n\nCompliance: Forthwith.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1605},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow technical scope—mandating specific fire prevention measures for the DH 90 Dragonfly aircraft type. There is no evidence of scope creep or expansion beyond the original safety intent."},"complexity_factors":["Extremely short document (approximately 150 words)","No interpretation section or defined terms","Simple structure: applicability, requirement (three alternative options), compliance","Single external cross-reference to ANO 105.1.14.11.5.1","Immediate unconditional compliance requirement","Technical aviation terminology (trouser cowls, stub wings, inlet manifold) requires industry knowledge"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners and operators of all DH 90 Dragonfly aeroplanes to take immediate action to prevent fuel spilling into trouser cowls or wing stubs during refuelling, which can ignite on hot exhaust stacks.  \n\nCompliance may be achieved by reworking inlet manifold drains to discharge away from exhausts, using physical covers/barriers during refuelling, or by following the older Air Navigation Order requirement — the change is required forthwith to eliminate fire risk."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-90-1-fire-precaution-measures-on-refuelling","history":"/api/acts/ad-dh-90-1-fire-precaution-measures-on-refuelling/history","analysis":"/api/acts/ad-dh-90-1-fire-precaution-measures-on-refuelling/analysis","conflicts":"/api/acts/ad-dh-90-1-fire-precaution-measures-on-refuelling/conflicts","importantCases":"/api/acts/ad-dh-90-1-fire-precaution-measures-on-refuelling/important-cases","documents":"/api/acts/ad-dh-90-1-fire-precaution-measures-on-refuelling/documents"}}