{"id":"F2006B06638","name":"AD/ROBIN/5 Amdt 1 - Engine Mount","slug":"ad-robin-5-amdt-1-engine-mount","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48541,"registerId":"commonwealth-F2006B06638-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ROBIN/5 Amdt 1 - Engine Mount","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)  Robin Aviation Series Aeroplanes\n\n \n\n# AD/ROBIN/5\n\nAmdt 1\n\nApplicability: All model 2160.\n\n# Engine Mount 4/87\n\n \n\nRequirement: 1. Carry out a close visual inspection of the engine mount in the area of the vibration isolator brackets for cracks in the welded isolator/tube attachment.\n\n \n\n2. Modify the engine mount in accordance with a scheme approved by the Secretary.\n\n \n\nNote: Avions Pierre Robin Inc. Canada. Plan 51-40-30 “Reinforcement of Engine Mount Vibration Isolator Brackets” is an acceptable scheme.\n\n \n\nCompliance: 1. At each daily inspection until modified.\n\n \n\n2. Modify within 100 hours time in service after 30 November 1983.\n\n \n\nNote: This inspection may be accomplished by the pilot-in-command, in which case the precise AD reference shall be entered in a certification made on the Maintenance Release coincident with that for the daily inspection.\n\n \n\nBackground: Instances of engine mount cracking have been reported. This amendment clarifies the termination of the daily inspection by modification.\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":854},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The amendment merely clarifies that daily inspections stop once the modification is complete. No expansion of aircraft coverage or additional requirements beyond the original safety intent."},"complexity_factors":["Single technical requirement with only two discrete steps (inspect then modify)","Limited applicability (only one specific aircraft model)","Only one external technical reference (Plan 51-40-30)","Simple temporal compliance structure (daily until modified, then fixed deadline)","No nested exceptions or conditional sub-clauses"],"plain_english_summary":"Owners and operators of Robin 2160 aircraft must inspect the engine mount around the vibration-isolator bracket for weld cracks before every flight (pilot may do this and must record it in the Maintenance Release) and must permanently reinforce the mount using the manufacturer’s approved Plan 51-40-30 within 100 flight hours after 30 November 1983.\n\nThis addresses discovered cracks that could allow engine shift or separation in flight, using daily checks as an interim safety measure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-robin-5-amdt-1-engine-mount","history":"/api/acts/ad-robin-5-amdt-1-engine-mount/history","analysis":"/api/acts/ad-robin-5-amdt-1-engine-mount/analysis","conflicts":"/api/acts/ad-robin-5-amdt-1-engine-mount/conflicts","importantCases":"/api/acts/ad-robin-5-amdt-1-engine-mount/important-cases","documents":"/api/acts/ad-robin-5-amdt-1-engine-mount/documents"}}