{"id":"F2006B05397","name":"AD/PA-18/7 - Front Seat Restraint Installations - Modification","slug":"ad-pa-18-7-front-seat-restraint-installations-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46028,"registerId":"commonwealth-F2006B05397-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-18/7 - Front Seat Restraint Installations -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-18 and 19 (Super Cub) Series Aeroplanes\n\n \n\nAD/PA-18/7 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 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":1242},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains tightly focused on its original purpose: mandating specific seat restraint modifications for Piper PA-18/19 aircraft. There is no expansion into unrelated areas or addition of extraneous requirements beyond the original aviation safety intent."},"complexity_factors":["Single, unambiguous requirement with no sub-conditions","No interpretation section or defined terms","No cross-references to other legislative instruments","Simple applicability test (all models of specified aircraft)","Fixed compliance date with no exceptions or alternative methods of compliance stated"],"plain_english_summary":"This directive mandates a critical safety upgrade for **Piper PA-18 and PA-19 (Super Cub) aircraft**. Owners must modify the front seat seatbelts by installing a proper **safety harness** (shoulder and lap restraint system) instead of simpler lap belts alone. The installation must follow a design specifically approved by the Secretary (the senior government official responsible for aviation at the time). \n\n**Who it affects:** Owners and operators of these specific Piper aircraft models.\n**What it requires:** Fitting approved safety harnesses in the front seats.\n**Why it matters:** This prevents occupants from being thrown forward during crashes or severe turbulence, significantly reducing the risk of serious head and spinal injuries.\n**Deadline:** The work had to be completed before 1 September 1972."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-18-7-front-seat-restraint-installations-modification","history":"/api/acts/ad-pa-18-7-front-seat-restraint-installations-modification/history","analysis":"/api/acts/ad-pa-18-7-front-seat-restraint-installations-modification/analysis","conflicts":"/api/acts/ad-pa-18-7-front-seat-restraint-installations-modification/conflicts","importantCases":"/api/acts/ad-pa-18-7-front-seat-restraint-installations-modification/important-cases","documents":"/api/acts/ad-pa-18-7-front-seat-restraint-installations-modification/documents"}}