{"id":"F2006B05564","name":"AD/PA-25/28 - Inertia Reel Installation","slug":"ad-pa-25-28-inertia-reel-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46552,"registerId":"commonwealth-F2006B05564-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-25/28 - Inertia Reel Installation","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-25 (Pawnee) Series Aeroplanes\n\n \n\nAD/PA-25/28 Inertia Reel Installation 12/68\n\nApplicability: All models.\n\n \n\nRequirement: Modify the pilot’s harness installation where necessary to fit a multi-directional type inertia reel complying with the US specification MIL-R-8236 or other specification acceptable to the Secretary.\n\n \n\nCompliance: Before 1 February 1969.\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":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1646},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This remains a narrow, technical airworthiness directive targeting a specific safety issue (pilot restraint) for a single aircraft type. The scope has not expanded beyond the original 1968 intent."},"complexity_factors":["Single page document with only one operative requirement","No defined terms, interpretation clauses, or internal cross-references","No exceptions, exemptions, or conditional logic","Only external reference is to technical specification MIL-R-8236"],"plain_english_summary":"**What it is:** A mandatory safety modification for Piper PA-25 Pawnee aircraft (agricultural planes used for crop dusting and aerial work).\n\n**What it requires:** Owners must fit an **inertia reel** to the pilot's safety harness. This is a locking mechanism—like the seatbelt in your car—that allows normal movement but locks tight during sudden stops or impacts to prevent the pilot being thrown forward.\n\n**Technical standard:** The reel must meet US military specification **MIL-R-8236** (or an equivalent standard approved by the Secretary responsible for aviation).\n\n**Who it affects:** All owners and operators of Piper PA-25 series aircraft.\n\n**Why it matters:** Prevents serious injury or death during emergency landings, turbulence, or sudden deceleration by restraining the pilot's upper body. The original compliance deadline was 1 February 1969."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-25-28-inertia-reel-installation","history":"/api/acts/ad-pa-25-28-inertia-reel-installation/history","analysis":"/api/acts/ad-pa-25-28-inertia-reel-installation/analysis","conflicts":"/api/acts/ad-pa-25-28-inertia-reel-installation/conflicts","importantCases":"/api/acts/ad-pa-25-28-inertia-reel-installation/important-cases","documents":"/api/acts/ad-pa-25-28-inertia-reel-installation/documents"}}