{"id":"F2009L00125","name":"AD/ML-M4/9 - Front Seat Restraint Installations - Modification - CANCELLED","slug":"ad-ml-m4-9-front-seat-restraint-installations-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76551,"registerId":"commonwealth-F2009L00125-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Maule M-4 Series Aeroplanes","sectionType":"division","heading":"Maule M-4 Series Aeroplanes","content":"### Maule M-4 Series Aeroplanes\n\n| AD/ML-M4/9 | Front Seat Restraint Installations - Modification | 2/2009 |\n| ---------- | ------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                          |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 12 February 2009.                                                                                                                                                                                                                                           |\n| Background:  | This unique Australian AD, issued in 1973, required modification of the front seat restraints by fitting an approved safety harness. The AD compliance was prior to1 December 1973. As the requirements are now covered by AD/GENERAL/74 Amendment 1, the AD is no longer required. |\n\n![](image.001.png)\n\nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n11 December 2008","sortOrder":0},{"sectionNumber":"AD/ML-M4/9","sectionType":"part","heading":"AD/ML-M4/9","content":"## AD/ML-M4/9","sortOrder":1},{"sectionNumber":"Front Seat Restraint Installations - Mod","sectionType":"part","heading":"Front Seat Restraint Installations - Modification","content":"## Front Seat Restraint Installations - Modification","sortOrder":2},{"sectionNumber":"2/2009","sectionType":"part","heading":"2/2009","content":"## 2/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2220},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The scope has been eliminated rather than expanded. This instrument removes the specific mandate for Maule M-4 aircraft entirely, transferring coverage to a general airworthiness directive (AD/GENERAL/74). The original 1973 requirement is no longer enforced as a standalone rule."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretive sections","No conditional logic, exceptions, or cross-references","Brief historical background of one paragraph"],"plain_english_summary":"This Airworthiness Directive (AD) **cancels a 1973 safety rule** that applied to Maule M-4 series aeroplanes (light aircraft).\n\n**What the old rule required:**\nThe original directive mandated that owners modify front seat restraints by installing approved safety harnesses (upgrading from basic lap belts to shoulder harnesses) before December 1973.\n\n**What this instrument does:**\nIt formally cancels that specific requirement as of **12 February 2009**. The safety standards are now covered by a general directive (AD/GENERAL/74 Amendment 1) that applies to all aircraft, making this model-specific rule unnecessary.\n\n**Who it affects:**\nOwners and operators of Maule M-4 series aircraft, though most would have complied with the harness requirement decades ago."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification-cancelled","history":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification-cancelled/history","analysis":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification-cancelled/analysis","conflicts":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification-cancelled/conflicts","importantCases":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification-cancelled/important-cases","documents":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification-cancelled/documents"}}