{"id":"F2006B05525","name":"AD/PA-24/27 - Front Seat Restraint Installations - Modification","slug":"ad-pa-24-27-front-seat-restraint-installations-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46408,"registerId":"commonwealth-F2006B05525-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-24/27 - Front Seat Restraint Installations - 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-24 (Comanche) Series Aeroplanes\n\n \n\nAD/PA-24/27 Front Seat Restraint Installations - Modification 10/71\n\nApplicability: All models.\n\n \n\nRequirement: Modify each front seat restraint installation by fitting a safety harness in accordance with a scheme approved by the Secretary.\n\n \n\nCompliance: Before 1 September 1972.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1974},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains precisely targeted at its original purpose: mandating front seat harness upgrades for Piper PA-24 aircraft. It has not expanded to include other aircraft systems, seat positions, or aircraft types."},"complexity_factors":["Single, unambiguous requirement with no exceptions or conditions","No cross-references to other legislative provisions","Minimal text (under 80 words)","Only one technical term requiring explanation (the Secretary)"],"plain_english_summary":"This Airworthiness Directive mandates a **safety upgrade** for specific aircraft.\n\n**What it requires:**\nOwners must modify the front seat restraint systems in Piper PA-24 Comanche aeroplanes by installing an approved safety harness (seatbelt and shoulder harness system). The installation must follow a design scheme approved by the Secretary (the senior government official responsible for aviation safety at the time).\n\n**Who it affects:**\nAll owners and operators of Piper PA-24 series aircraft, regardless of specific model variant.\n\n**Why it matters:**\nThis ensures pilots and front passengers have proper upper-body restraint during turbulence, hard landings, or accidents—significantly improving survival chances compared to basic lap belts alone.\n\n**Compliance deadline:**\nThe modification must be completed before 1 September 1972."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-24-27-front-seat-restraint-installations-modification","history":"/api/acts/ad-pa-24-27-front-seat-restraint-installations-modification/history","analysis":"/api/acts/ad-pa-24-27-front-seat-restraint-installations-modification/analysis","conflicts":"/api/acts/ad-pa-24-27-front-seat-restraint-installations-modification/conflicts","importantCases":"/api/acts/ad-pa-24-27-front-seat-restraint-installations-modification/important-cases","documents":"/api/acts/ad-pa-24-27-front-seat-restraint-installations-modification/documents"}}