{"id":"F2006B11295","name":"AD/ML-M4/9 - Front Seat Restraint Installations - Modification","slug":"ad-ml-m4-9-front-seat-restraint-installations-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57117,"registerId":"commonwealth-F2006B11295-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ML-M4/9 - Front Seat Restraint Installations -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)  Maule M-4 Series Aeroplanes\n\n \n\nAD/ML-M4/9 Front Seat Restraint Installations - Modification 11/72\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\nNote: Guidelines for installation schemes are outlined in Airworthiness Advisory Circular No. 62 dated March 1972.\n\n \n\nCompliance: Before 1 December 1973.\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":1895},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This appears to be the original 1972 directive (marked 11/72) with no amendments or expansions beyond the initial requirement to fit front seat safety harnesses."},"complexity_factors":["Single operative requirement with no subsections","No definitions or interpretation section","No cross-references to other legislative provisions","Simple applicability statement ('All models')","Straightforward compliance deadline"],"plain_english_summary":"This **Airworthiness Directive** mandates a critical safety upgrade for all Maule M-4 series aircraft.\n\n**What it requires:**\n- Owners must install proper **safety harnesses** (shoulder restraints or similar) in every front seat\n- The installation must follow a specific scheme approved by the **Secretary** (the senior government official responsible for aviation safety at that time)\n\n**Who it affects:**\n- All owners and operators of Maule M-4 series aeroplanes, regardless of specific model\n\n**Key details:**\n- While Advisory Circular No. 62 (March 1972) provides installation guidelines, the actual plan must receive official approval\n- The deadline for completing this modification was **1 December 1973**\n\n**Why it matters:**\nThis directive forces the replacement of older lap-belt systems with proper upper-body restraint harnesses, dramatically reducing the risk of serious injury or death for pilots and front-seat passengers during crashes, turbulence, or hard landings."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification","history":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification/history","analysis":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification/analysis","conflicts":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification/conflicts","importantCases":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification/important-cases","documents":"/api/acts/ad-ml-m4-9-front-seat-restraint-installations-modification/documents"}}