{"id":"F2006B09345","name":"AD/ECUREUIL/39 - Cargo Hook Emergency Manual Control","slug":"ad-ecureuil-39-cargo-hook-emergency-manual-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53563,"registerId":"commonwealth-F2006B09345-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ECUREUIL/39 - Cargo Hook Emergency Manual Control","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)  Eurocopter AS 350 (Ecureuil) Series Helicopters\n\n \n\nAD/ECUREUIL/39 Cargo Hook Emergency Manual Control 11/87\n\nApplicability: All AS 350 helicopters with cargo hooks fitted with Siren S1609-5 release unit (P/N 704A41-811-017).\n\n \n\nRequirement: Action in accordance with Aerospatiale SB No. 25.31. Compliance: Hook Assy to be modified by 31 December 1987.\n\nBackground: A spring unit has been added to the cargo hook electrical release to prevent inadvertent hook operation.\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":1296},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, technical scope focused solely on the specific cargo hook safety modification. There is no evidence of expansion beyond the original remedial safety purpose."},"complexity_factors":["Single, unambiguous technical requirement","Clear applicability limited to one helicopter series and specific part number","No defined terms or interpretation sections","Single fixed-date compliance deadline","Only one external reference (manufacturer's Service Bulletin)"],"plain_english_summary":"**What this does:** This airworthiness directive (a mandatory safety order) requires owners of specific Eurocopter AS 350 helicopters to modify their cargo hook systems to prevent accidental release of loads.\n\n**Who it affects:** Owners and operators of AS 350 helicopters fitted with cargo hooks using the Siren S1609-5 release unit (part number 704A41-811-017).\n\n**What must be done:** The cargo hook assembly must be modified according to the manufacturer's Service Bulletin No. 25.31. This involves adding a spring unit to the electrical release mechanism.\n\n**Why it matters:** Without this modification, the cargo hook could open accidentally during flight, dropping suspended loads and creating serious safety hazards for people and property below.\n\n**Compliance deadline:** The modification had to be completed by 31 December 1987."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-39-cargo-hook-emergency-manual-control","history":"/api/acts/ad-ecureuil-39-cargo-hook-emergency-manual-control/history","analysis":"/api/acts/ad-ecureuil-39-cargo-hook-emergency-manual-control/analysis","conflicts":"/api/acts/ad-ecureuil-39-cargo-hook-emergency-manual-control/conflicts","importantCases":"/api/acts/ad-ecureuil-39-cargo-hook-emergency-manual-control/important-cases","documents":"/api/acts/ad-ecureuil-39-cargo-hook-emergency-manual-control/documents"}}