{"id":"F2007L01358","name":"AD/SA 315/16 - Freewheel Lubrication System","slug":"ad-sa-315-16-freewheel-lubrication-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":65632,"registerId":"commonwealth-F2007L01358-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter SA 315 (Lama) Series Helicopt","sectionType":"division","heading":"Eurocopter SA 315 (Lama) Series Helicopters","content":"### Eurocopter SA 315 (Lama) Series Helicopters\n\n| AD/SA 315/16 | Freewheel Lubrication System | 6/2007 |\n| ------------ | ---------------------------- | ------ |\n\n| Applicability: | Eurocopter SA 315 (LAMA) helicopters fitted with:MGB 319A.62.00.000FREEWHEEL UNIT 3160S.60.10.000CLUTCH UNIT 3160S.63.20.000All dash numbers.                                                                                                                                                                       |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Incorporate the modifications detailed in Eurocopter Service Bulletin (SB) LAMA No. 65.06 Issue 2.2. Carry out an inspection of the freewheel lubrication system in accordance with Eurocopter SB No. 05.14, original issue or later approved revisions.Note: DGAC AD 79-53-18(B) dated 28 February 1979 refers. |\n| Compliance:    | 1. Within 30 days after the effective date of this AD unless previously accomplished.2. After the first flight following installation of a MGB after the effective date of this AD and thereafter at intervals not to exceed 100 flight hours.                                                                      |\n|                | This Airworthiness Directive becomes effective on 7 June 2007.                                                                                                                                                                                                                                                      |\n| Background:    | Several cases of loss of freewheel units have been caused by faulty lubrication on units fitted with a self lubricating system. This system is to be removed and more general lubrication system installed. In addition a periodic inspection program to check the lubrication system has been mandated.            |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n26 April 2007","sortOrder":0},{"sectionNumber":"AD/SA 315/16","sectionType":"part","heading":"AD/SA 315/16","content":"## AD/SA 315/16","sortOrder":1},{"sectionNumber":"Freewheel Lubrication System","sectionType":"part","heading":"Freewheel Lubrication System","content":"## Freewheel Lubrication System","sortOrder":2},{"sectionNumber":"6/2007","sectionType":"part","heading":"6/2007","content":"## 6/2007","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains a narrow, targeted scope focused specifically on the freewheel lubrication system defect in Eurocopter SA 315 Lama helicopters. The scope has not expanded beyond the original safety issue identified — faulty self-lubricating systems causing freewheel unit failures. The directive remains tightly constrained to the specific part numbers and aircraft models originally affected."},"complexity_factors":["Single, specific aircraft type and component system targeted","Only 2 main requirements: one-time modification plus recurring inspection","Clear compliance deadlines (30 days, then 100 flight hour intervals)","Minimal cross-referencing (only 2 Eurocopter Service Bulletins and 1 French DGAC AD)","No nested exceptions or conditional logic — requirements apply uniformly to all affected aircraft","Short document (approximately 200 words of substantive content)","Straightforward applicability criteria based on specific part numbers"],"plain_english_summary":"CASA requires owners/operators of Eurocopter SA 315 (Lama) helicopters to fix a defective freewheel lubrication system that has caused loss of freewheel units, risking inability to autorotate and possible fatal crashes.\n\nWithin 30 days of 7 June 2007 install the improved system per Eurocopter Service Bulletin LAMA No. 65.06 Issue 2, and begin inspections after the first post-install flight and every 100 flight hours thereafter."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD addresses the specific problem stated in the Background by removing the self‑lubricating freewheel and mandating installation of the Eurocopter lubrication modification plus a periodic inspection regime. It does not expand applicability beyond the listed SA 315 (Lama) helicopters fitted with the specified freewheel/clutch units, nor create new categories of affected aircraft."},"complexity_factors":["Narrow technical scope: applies only to SA 315 (Lama) helicopters fitted with specific freewheel/clutch part numbers (Applicability).","Dependence on external manufacturer documents: mandates compliance with Eurocopter Service Bulletins LAMA No.65.06 Issue 2.2 and SB No.05.14.","Mechanical modification required: removal of a self‑lubricating system and installation of a different lubrication arrangement.","Recurring compliance: inspection after first flight post‑installation and recurring at intervals not exceeding 100 flight hours (Compliance).","Short initial deadline: modification required within 30 days of the AD (Compliance).","Regulatory enforcement and effective date set by CASA (Effective date / Delegate signature).","Operational and cost burden falls on owners/operators for parts, labour and ongoing inspections."],"plain_english_summary":"This AD requires Eurocopter SA 315 (Lama) helicopters fitted with specified freewheel or clutch units to remove the self‑lubricating freewheel, install the lubrication modifications in Eurocopter Service Bulletin LAMA No.65.06 Issue 2.2, and inspect the freewheel lubrication system per SB No.05.14.\n\nIt affects owners/operators of those helicopters; the modification must be done within 30 days and inspections occur after the first flight following installation and at intervals not exceeding 100 flight hours. CASA set the effective date (7 June 2007) and enforces the AD."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-sa-315-16-freewheel-lubrication-system","history":"/api/acts/ad-sa-315-16-freewheel-lubrication-system/history","analysis":"/api/acts/ad-sa-315-16-freewheel-lubrication-system/analysis","conflicts":"/api/acts/ad-sa-315-16-freewheel-lubrication-system/conflicts","importantCases":"/api/acts/ad-sa-315-16-freewheel-lubrication-system/important-cases","documents":"/api/acts/ad-sa-315-16-freewheel-lubrication-system/documents"}}