{"id":"F2009L03373","name":"AD/CESSNA 337/18 - Fifth Seat Restraint - Modification - CANCELLED","slug":"ad-cessna-337-18-fifth-seat-restraint-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":140950,"registerId":"commonwealth-F2009L03373-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 337 Series Aeroplanes","sectionType":"division","heading":"Cessna 337 Series Aeroplanes","content":"### Cessna 337 Series Aeroplanes\n\n| AD/CESSNA 337/18 | Fifth Seat Restraint - Modification | 10/2009 |\n| ---------------- | ----------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                                 |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 24 September 2009.                                                                                                                                                                                                                                                                                 |\n| Background:  | This unique Australian AD specified modification of attachment of the fifth seat to the floor structure. Compliance was required prior to issue of a Certificate of Airworthiness. This AD was not based on a manufacturer’s service document. Continued use of an AD to mandate this modification is no longer justified. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n14 August 2009","sortOrder":0},{"sectionNumber":"AD/CESSNA 337/18","sectionType":"part","heading":"AD/CESSNA 337/18","content":"## AD/CESSNA 337/18","sortOrder":1},{"sectionNumber":"Fifth Seat Restraint - Modification","sectionType":"part","heading":"Fifth Seat Restraint - Modification","content":"## Fifth Seat Restraint - Modification","sortOrder":2},{"sectionNumber":"10/2009","sectionType":"part","heading":"10/2009","content":"## 10/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2971},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument achieves its sole intended purpose of cancelling the previous airworthiness directive. It does not expand the scope to cover additional aircraft types, seats, or requirements; rather, it eliminates the previous obligation entirely."},"complexity_factors":["Document contains only a single operative provision (cancellation)","No defined terms section","No cross-references to other legislative instruments","Extremely brief (under 100 words of substantive content)","No conditional logic, exceptions, or procedural requirements"],"plain_english_summary":"This document **cancels** a previous aviation safety rule for **Cessna 337 aircraft** (twin-engine planes).\n\n**What was cancelled:**\nA requirement to modify how the fifth seat attaches to the floor structure. Previously, owners had to complete this work before obtaining a Certificate of Airworthiness (the official approval that an aircraft is safe to fly).\n\n**Why it matters:**\nThe Civil Aviation Safety Authority decided this uniquely Australian modification requirement was no longer justified. Owners of Cessna 337 aircraft no longer need to make this specific seat attachment change to receive their airworthiness certificate."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-337-18-fifth-seat-restraint-modification-cancelled","history":"/api/acts/ad-cessna-337-18-fifth-seat-restraint-modification-cancelled/history","analysis":"/api/acts/ad-cessna-337-18-fifth-seat-restraint-modification-cancelled/analysis","conflicts":"/api/acts/ad-cessna-337-18-fifth-seat-restraint-modification-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-337-18-fifth-seat-restraint-modification-cancelled/important-cases","documents":"/api/acts/ad-cessna-337-18-fifth-seat-restraint-modification-cancelled/documents"}}