{"id":"F2006L03629","name":"AD/SA 315/11 - Main Rotor Hub","slug":"ad-sa-315-11-main-rotor-hub","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":137333,"registerId":"commonwealth-F2006L03629-current","compilationNumber":null,"startDate":"2026-04-03","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 315/11 | Main Rotor Hub | 12/2006 |\n| ------------ | -------------- | ------- |\n\n| Applicability: | Model SA 315 B helicopters equipped with main rotor hub body part number 3160.12.10020 and 3160.12.10020.1.                                                                                                               |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Inspect the visible internal and external areas of the rotor hub yoke lugs in accordance with the Maintenance Manual Work Card 5720.601 (issued 12.83).Note: DGAC AD 84-134-29(B) and LAMA Telex Service No. 65.34 refer. |\n| Compliance:    | At intervals not to exceed 400 flight hours, until the accumulation of 3,000 flight hours.Upon the accumulation of 3,000 flight hours, inspect at intervals not to exceed 50 flight hours.                                |\n|                | This Airworthiness Directive becomes effective on 23 November 2006.                                                                                                                                                       |\n| Background:    | The DGAC requires inspection for cracks in the lugs of the rotor hub yokes.                                                                                                                                               |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 October 2006","sortOrder":0},{"sectionNumber":"AD/SA 315/11","sectionType":"part","heading":"AD/SA 315/11","content":"## AD/SA 315/11","sortOrder":1},{"sectionNumber":"Main Rotor Hub","sectionType":"part","heading":"Main Rotor Hub","content":"## Main Rotor Hub","sortOrder":2},{"sectionNumber":"12/2006","sectionType":"part","heading":"12/2006","content":"## 12/2006","sortOrder":3}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive targeting a specific known defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific applicability criterion (two part numbers)","Straightforward two-phase compliance schedule (400-hour intervals, then 50-hour intervals)","Single inspection method referenced (one work card)","No defined terms section","No cross-references to other legislation (only references to foreign aviation authority directive and manufacturer telex for background)","No conditional logic or exceptions"],"plain_english_summary":"This CASA Airworthiness Directive mandates visual inspections of the main rotor hub yoke lugs on Eurocopter SA 315 B \"Lama\" helicopters with specified hub part numbers to detect cracking.  \n\nInspections are required every 400 flight hours until 3,000 total hours, then every 50 hours thereafter. The AD addresses cracking that could cause catastrophic main‑rotor failure."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The directive maintains a narrowly focused scope: mandatory inspections of rotor hub yoke lugs on SA 315B helicopters with the two specified hub part numbers. Nothing in the text indicates expansion or narrowing of applicability beyond that identification and the staged inspection intervals."},"complexity_factors":["Two-tier inspection frequency: 400 flight-hour intervals until 3,000 hours, then 50-hour intervals thereafter (requires tracking of hub hours).","Applies only to helicopters with specific main rotor hub body part numbers (narrow applicability but requires PN verification).","Inspections must cover visible internal and external areas of yoke lugs (may require disassembly or access procedures from Maintenance Manual Work Card 5720.601).","References other directives/documents (DGAC AD 84-134-29(B), LAMA Telex Service No. 65.34) which may affect interpretation or follow-on actions.","Imposes recurring operational costs and potential aircraft downtime for operators; enforcement and effective date set by CASA."],"plain_english_summary":"This Airworthiness Directive requires operators of Eurocopter SA 315B (Lama) helicopters fitted with main rotor hub body PNs 3160.12.10020 or 3160.12.10020.1 to perform visual internal and external inspections of the rotor hub yoke lugs using Maintenance Manual Work Card 5720.601. Inspections are every 400 flight hours until the hub reaches 3,000 hours, then every 50 hours; effective 23 November 2006. Operators pay for inspections and may face increased downtime; the rule is intended to detect cracks in yoke lugs as identified by DGAC."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sa-315-11-main-rotor-hub","history":"/api/acts/ad-sa-315-11-main-rotor-hub/history","analysis":"/api/acts/ad-sa-315-11-main-rotor-hub/analysis","conflicts":"/api/acts/ad-sa-315-11-main-rotor-hub/conflicts","importantCases":"/api/acts/ad-sa-315-11-main-rotor-hub/important-cases","documents":"/api/acts/ad-sa-315-11-main-rotor-hub/documents"}}