{"id":"F2006B11290","name":"AD/ML-M4/4 - Engine Mount Rear Support Fittings - Modification","slug":"ad-ml-m4-4-engine-mount-rear-support-fittings-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57103,"registerId":"commonwealth-F2006B11290-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ML-M4/4 - Engine Mount Rear Support Fittings - 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-M4/4 Engine Mount Rear Support Fittings - Modification\n\n\n11/67\n\n \n\nApplicability: All model M-4-210 with S/Nos. 1002, 1003, 1005, 1006, 1008 to 1014, 1016, 1017,\n\n1019, 1020, 1021, 1023 to 1027, 1030 1031 and 1033.\n\n \n\nDocument: Maule SL No. 10. Compliance: Forthwith.\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":1659},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original technical purpose: mandating a specific modification to engine mount fittings for a narrow subset of Maule aircraft. There is no evidence of expanded coverage beyond the identified serial numbers or additional unrelated requirements."},"complexity_factors":["Single operative requirement with no exceptions or conditions","Limited applicability defined by specific list of 19 serial numbers","No defined terms or interpretation sections","References external technical document (Maule SL No. 10) rather than reproducing complex instructions"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (a mandatory safety order) issued by the Civil Aviation Safety Authority. It requires urgent modifications to the engine mount rear support fittings on specific Maule M-4 aircraft.\n\n**Who it affects:** Owners and operators of Maule M-4-210 model aeroplanes with specific serial numbers: 1002, 1003, 1005, 1006, 1008 to 1014, 1016, 1017, 1019, 1020, 1021, 1023 to 1027, 1030, 1031, and 1033.\n\n**What you must do:** You must comply with Maule Service Letter No. 10 **immediately** (the directive uses the term \"forthwith,\" which means without delay). This involves modifying the rear support fittings on the engine mount.\n\n**Why it matters:** Engine mounts hold the engine to the airframe. If these fittings fail, the engine could detach or shift in flight, leading to catastrophic loss of control or power."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ml-m4-4-engine-mount-rear-support-fittings-modification","history":"/api/acts/ad-ml-m4-4-engine-mount-rear-support-fittings-modification/history","analysis":"/api/acts/ad-ml-m4-4-engine-mount-rear-support-fittings-modification/analysis","conflicts":"/api/acts/ad-ml-m4-4-engine-mount-rear-support-fittings-modification/conflicts","importantCases":"/api/acts/ad-ml-m4-4-engine-mount-rear-support-fittings-modification/important-cases","documents":"/api/acts/ad-ml-m4-4-engine-mount-rear-support-fittings-modification/documents"}}