{"id":"F2006B06009","name":"AD/PA-44/2 - Fuel Line - Inspection and Modification","slug":"ad-pa-44-2-fuel-line-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114407,"registerId":"commonwealth-F2006B06009-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-44/2 - Fuel Line - Inspection and Modification","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)  Piper PA-44 (Seminole) Series Aeroplanes\n\n \n\nAD/PA-44/2 Fuel Line - Inspection and Modification 1/79\n\nApplicability: Model PA-44-180 with S/Nos. 44-7995001 to 44-7995003, 44-7995005 to 44-\n\n7995023, 44-7995025 to 44-7995053, 44-7995055 to 44-7995064, 44-7995066, 44-\n\n7995067, 44-7995069, 44-7995071, 44-7995073 and 44-7995074.\n\n \n\nDocument: Piper SB No. 627. Compliance:  Before certification.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The provided text defines a narrowly targeted requirement (inspection and modification of the fuel line for specific PA-44-180 serial numbers) and requires compliance prior to certification. The text contains no indication that the scope has been expanded or reduced from an earlier version; therefore no change in scope is indicated in the supplied material."},"complexity_factors":["Narrow, specific applicability limited to listed PA-44-180 serial numbers (reduces scope complexity).","Compliance is simple in timing (must be done before certification) but leaves scheduling and administrative details to owners/operators and certifying authorities.","Mechanics of compliance are delegated to an external document (Piper SB No. 627), so implementers must obtain and interpret that bulletin to know the exact steps.","The directive text provides little procedural detail on enforcement, record-keeping, or cost allocation, creating some practical uncertainty for implementers.","Potential operational impact (certification delay) creates coordination complexity between maintenance providers and certifying bodies."],"plain_english_summary":"Owners/operators of the listed Piper PA‑44‑180 (Seminole) aircraft must have the fuel line inspected and, if required, modified in accordance with Piper Service Bulletin No. 627. Compliance must be completed and documented before the affected aeroplane can be certified, so affected owners/operators (or their maintenance providers) bear the cost and scheduling impact."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific mechanical defect in a limited production run of aircraft. It has not expanded beyond its original purpose of mandating a particular fuel line inspection and modification."},"complexity_factors":["Extremely short document (approximately 150 words of substantive content)","Only one defined applicability criterion (specific serial number ranges)","Single compliance requirement with clear deadline ('Before certification')","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","No conditional logic, exceptions, or nested provisions","References external technical document (Piper SB No. 627) rather than embedding complex technical specifications"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires owners and operators of specific Piper PA-44-180 Seminole aircraft to inspect and modify the fuel lines. The directive references **Piper Service Bulletin No. 627** as the technical document detailing exactly what needs to be done.\n\n**Who it affects:** Only specific aircraft — Piper PA-44-180 models with particular serial numbers (ranging from 44-7995001 to 44-7995074, with several gaps in the sequence). This is a very narrow, targeted group of planes.\n\n**When it must be done:** **Before certification** — meaning the work must be completed before the aircraft can be certified as airworthy (either initially or upon re-certification).\n\n**Why it matters:** Fuel line defects can cause fuel leaks, engine failure, or fire. This AD ensures a known safety issue is fixed before these specific aircraft are allowed to fly. Ignoring it means the aircraft cannot be legally operated in Australian airspace."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-44-2-fuel-line-inspection-and-modification","history":"/api/acts/ad-pa-44-2-fuel-line-inspection-and-modification/history","analysis":"/api/acts/ad-pa-44-2-fuel-line-inspection-and-modification/analysis","conflicts":"/api/acts/ad-pa-44-2-fuel-line-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-pa-44-2-fuel-line-inspection-and-modification/important-cases","documents":"/api/acts/ad-pa-44-2-fuel-line-inspection-and-modification/documents"}}