{"id":"F2006B05723","name":"AD/PA-31/18 - Front Seat Restraint Installations - Modification","slug":"ad-pa-31-18-front-seat-restraint-installations-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135522,"registerId":"commonwealth-F2006B05723-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/18 - Front Seat Restraint Installations -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-31 Series Aeroplanes\n\n \n\nAD/PA-31/18 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\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":1395},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope targeting only front seat restraint modifications for Piper PA-31 aircraft. No expansion beyond the initial safety requirement is evident."},"complexity_factors":["Single-page document with no sections or subsections","No defined terms or interpretation clauses","Single, unambiguous requirement with explicit applicability","No cross-references to external standards or legislation","Clear compliance date with no conditional exceptions"],"plain_english_summary":"**What it is:** An aviation safety rule (Airworthiness Directive) requiring safety upgrades to seatbelts in specific aircraft.\n\n**Who it affects:** Owners and operators of **Piper PA-31 series aeroplanes** (all models).\n\n**What you must do:** Modify the front seat restraint installations by fitting proper safety harnesses. The installation must follow a scheme (plan) approved by the Secretary of the relevant government department.\n\n**Why it matters:** This ensures front-seat passengers and pilots have proper safety restraints to reduce injury during turbulence or accidents.\n\n**Deadline:** The modifications had to be completed before 1 September 1972."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-18-front-seat-restraint-installations-modification","history":"/api/acts/ad-pa-31-18-front-seat-restraint-installations-modification/history","analysis":"/api/acts/ad-pa-31-18-front-seat-restraint-installations-modification/analysis","conflicts":"/api/acts/ad-pa-31-18-front-seat-restraint-installations-modification/conflicts","importantCases":"/api/acts/ad-pa-31-18-front-seat-restraint-installations-modification/important-cases","documents":"/api/acts/ad-pa-31-18-front-seat-restraint-installations-modification/documents"}}