{"id":"F2006B09342","name":"AD/ECUREUIL/35 - Planet Gear Cage to Rotor Shaft Attachment Bolts","slug":"ad-ecureuil-35-planet-gear-cage-to-rotor-shaft-attachment-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53552,"registerId":"commonwealth-F2006B09342-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ECUREUIL/35 - Planet Gear Cage to Rotor Shaft Attachment Bolts","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/35 Planet Gear Cage to Rotor Shaft Attachment Bolts\n\n\n3/87\n\n \n\nApplicability: All model AS 350 B, B1, D, D1, L1 fitted with main rotor shaft assembly P.N.\n\n350A37-0003-01 to -05.\n\n \n\nRequirement: Action in accordance with Aerospatiale AS 350 Service Bulletin No. 62-08.\n\n \n\nCompliance: At the next Main Rotor Shaft disassembly operation or the next 300 hour rotor shaft repair operation after 12 March 1987 which ever occurs first.\n\n \n\nBackground: The manufacturer has replaced BC type bolts with BE type bolts to attach the planet gear cage to the rotorshaft.\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":1333},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope as a specific mandatory maintenance action regarding bolt replacement in the rotor gear assembly. It has not expanded beyond this original airworthiness safety purpose."},"complexity_factors":["Single discrete technical requirement with no sub-conditions","Short applicability list limited to specific part number range","Compliance deadline is straightforward (next maintenance event or time limit)","References external technical document (Service Bulletin No. 62-08) for actual procedure details"],"plain_english_summary":"Owners/operators of Eurocopter AS 350 B, B1, D, D1 and L1 helicopters with main rotor shaft assemblies (P/N 350A37-0003-01 to -05) must replace existing \"BC type\" planet‑gear cage bolts with stronger \"BE type\" bolts.  \n\nDo the swap at the next main rotor shaft disassembly or within 300 flight hours of rotor‑shaft repair after 12 March 1987. Failure to comply renders the aircraft unairworthy; the change prevents potential catastrophic rotor failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-35-planet-gear-cage-to-rotor-shaft-attachment-bolts","history":"/api/acts/ad-ecureuil-35-planet-gear-cage-to-rotor-shaft-attachment-bolts/history","analysis":"/api/acts/ad-ecureuil-35-planet-gear-cage-to-rotor-shaft-attachment-bolts/analysis","conflicts":"/api/acts/ad-ecureuil-35-planet-gear-cage-to-rotor-shaft-attachment-bolts/conflicts","importantCases":"/api/acts/ad-ecureuil-35-planet-gear-cage-to-rotor-shaft-attachment-bolts/important-cases","documents":"/api/acts/ad-ecureuil-35-planet-gear-cage-to-rotor-shaft-attachment-bolts/documents"}}