{"id":"F2006B02167","name":"AD/AC-100/15 - Engine Mount Bolts - Inspection","slug":"ad-ac-100-15-engine-mount-bolts-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41397,"registerId":"commonwealth-F2006B02167-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC-100/15 - Engine Mount Bolts - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 4/1973,Aircraft below 5700 kg,S.L. Industries Commander 100 Series and Volair 10 Series Aeroplanes,Engine Mount Bolts - Inspection,15\ntitle: Airworthiness Directive - AD/AC-100/15 - Engine Mount Bolts - Inspection\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)  S.L. Industries Commander 100 Series and Volair 10 Series Aeroplanes\n\n \n\nAD/AC-100/15 Engine Mount Bolts - Inspection 4/73\n\nApplicability: All models with S/Nos. 068, and 5001 to 5051. Document:  Aero Commander SB 1012.\n\nCompliance: Within 100 hours’ time in service after 30 April 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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1515},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive retains its original, narrow scope targeting a specific mechanical safety issue (engine mount bolt integrity) for defined aircraft models. There is no evidence of scope expansion beyond the initial safety intent."},"complexity_factors":["Single, unambiguous compliance task (visual inspection)","Narrow applicability limited to specific aircraft serial numbers","No conditional exceptions, provisos, or alternative compliance methods","Minimal cross-referencing (only to one external service bulletin)","No defined terms or interpretive provisions required"],"plain_english_summary":"**What this does:** This is a mandatory safety notice (called an Airworthiness Directive) that requires owners and operators of specific light aircraft to inspect the bolts holding the engine to the plane's frame.\n\n**Who it affects:** Owners of S.L. Industries Commander 100 Series and Volair 10 Series aeroplanes with serial numbers 068, or 5001 through 5051.\n\n**What must be done:** The engine mount bolts must be inspected following the procedures in the manufacturer's Service Bulletin 1012.\n\n**When:** The inspection must be completed within 100 hours of flight time after 30 April 1973.\n\n**Why it matters:** Loose or cracked engine mount bolts could cause the engine to detach from the aircraft in flight, leading to loss of control or power."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-100-15-engine-mount-bolts-inspection","history":"/api/acts/ad-ac-100-15-engine-mount-bolts-inspection/history","analysis":"/api/acts/ad-ac-100-15-engine-mount-bolts-inspection/analysis","conflicts":"/api/acts/ad-ac-100-15-engine-mount-bolts-inspection/conflicts","importantCases":"/api/acts/ad-ac-100-15-engine-mount-bolts-inspection/important-cases","documents":"/api/acts/ad-ac-100-15-engine-mount-bolts-inspection/documents"}}