{"id":"F2006B10096","name":"AD/G164/11 - Spray Fan Brake Control - Modification","slug":"ad-g164-11-spray-fan-brake-control-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55589,"registerId":"commonwealth-F2006B10096-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G164/11 - Spray Fan Brake Control - 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)  Schweizer (Grumman) G-164 (Ag-Cat) Series Aeroplanes\n\n \n\nAD/G164/11 Spray Fan Brake Control - Modification 8/69\n\nApplicability: All G164 and G164A with S/Nos. 1 to 625 with A1976-11 fan brake control. Document:               Grumman G164 SB No. 44.\n\nCompliance: Within 100 hours time in service after 29 August 1969.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2387},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow technical scope from 1969, targeting a specific mechanical defect in the fan brake control of specific Grumman G-164 aircraft. It has not expanded beyond the original safety modification requirement."},"complexity_factors":["Single operative paragraph with no subsections or subdivisions","No defined terms or interpretation provisions","Simple applicability criteria based solely on aircraft serial numbers and part numbers","Single compliance action with one clear deadline and no exceptions","No cross-references to other legislative provisions beyond the enabling Part 39 reference"],"plain_english_summary":"This AD requires owners/operators of Schweizer (Grumman) G-164 and G-164A aeroplanes (serials 1–625) fitted with the A1976-11 spray fan brake control to modify that control per Grumman Service Bulletin No. 44. The change must be completed within 100 flight hours after 29 August 1969 to correct a defect that could allow fan brake failure during agricultural spraying, protecting flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g164-11-spray-fan-brake-control-modification","history":"/api/acts/ad-g164-11-spray-fan-brake-control-modification/history","analysis":"/api/acts/ad-g164-11-spray-fan-brake-control-modification/analysis","conflicts":"/api/acts/ad-g164-11-spray-fan-brake-control-modification/conflicts","importantCases":"/api/acts/ad-g164-11-spray-fan-brake-control-modification/important-cases","documents":"/api/acts/ad-g164-11-spray-fan-brake-control-modification/documents"}}