{"id":"F2006B08223","name":"AD/CESSNA 336/2 - Cooling Fan - Inspection","slug":"ad-cessna-336-2-cooling-fan-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115463,"registerId":"commonwealth-F2006B08223-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 336/2 - Cooling Fan - Inspection","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nCessna 336 Series Aeroplanes\n\nAD/CESSNA 336/2 Cooling Fan \\- Inspection 6/65\n\nApplicability: All models not modified in accordance with Cessna SL 65-42.\n\nRequirement: 1. Remove rear engine cowls, remove propeller and cooling fan, and dismantle fan assembly.\n\nNote: It is important in order to retain the balance of the assembly to mark all parts in their existing position so that when re-assembly is made, no change in balance will occur.\n\n    2. Inspect support plates P/No. 1457212-1 and 1457217-1 for cracks paying particular attention to the area around the inner circle of attachment holes.\n\n    3. Inspect the pan P/No. 1457219-1 for cracks, again paying particular attention to the area around the inner circle of attachment holes.\n\n    4. Any replacement of parts will require rebalancing of assembly. Compliance: At intervals not exceeding 100 hours time in service after 1 June 1965.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1695},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope: prescribing recurring inspections of cooling fan assemblies on Cessna 336 aircraft to detect fatigue cracks before failure occurs. No expansion beyond this specific airworthiness issue is evident."},"complexity_factors":["Single, specific aircraft type and limited part numbers","No interpretation section or defined legal terms","Straightforward procedural steps with minimal conditional logic (only replacement triggers rebalancing)","No cross-references to other legislation beyond the enabling Civil Aviation Regulations"],"plain_english_summary":"Owners and operators of Cessna 336 aeroplanes not modified per Cessna Service Letter 65-42 must have mechanics perform mandatory inspections of the rear engine cooling fan assembly at least every 100 flight hours. The rule requires dismantling and detailed inspection of the fan assembly for metal fatigue cracks and rebalancing or replacing parts as needed to prevent fan failure, engine overheating, or catastrophic engine damage."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-336-2-cooling-fan-inspection","history":"/api/acts/ad-cessna-336-2-cooling-fan-inspection/history","analysis":"/api/acts/ad-cessna-336-2-cooling-fan-inspection/analysis","conflicts":"/api/acts/ad-cessna-336-2-cooling-fan-inspection/conflicts","importantCases":"/api/acts/ad-cessna-336-2-cooling-fan-inspection/important-cases","documents":"/api/acts/ad-cessna-336-2-cooling-fan-inspection/documents"}}