{"id":"F2006L03626","name":"AD/SA 315/7 - Main Rotor Blades","slug":"ad-sa-315-7-main-rotor-blades","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":137325,"registerId":"commonwealth-F2006L03626-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 315/7 | Main Rotor Blades | 12/2006 |\n| ----------- | ----------------- | ------- |\n\n| Applicability: | Model SA 315 B helicopters, fitted with main rotor blades part numbers:3160S11-30-000, all dash numbers,3160S11-40-000, all dash numbers,3160S11-50-000, all dash numbers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | 1. Action in accordance with paragraph 2.1 of Eurocopter Service BulletinNo. 65-38 R1.If the results of the checks are satisfactory, before further flight, modify the blade part numbers in accordance with paragraph 2.3 of the Requirement document, and return the blades to service.2. If the results of the checks are not satisfactory, remove the blades from service.Note: DGAC AD 93-104-034(B) R2 refers.                                                                                                                                                                                                                                                                                         |\n| Compliance:    | 1.a. Unless already accomplished, before 2,900 flight hours since new or since reconstruction for blades which have logged less than 2,800 flight hours since new or since reconstruction, as applicable, at the effective date of this Directive.1.b. Unless already accomplished, within 100 flight hours after the effective date of this Directive for blades which have logged 2,800 flight hours or more since new or since reconstruction, as applicable.2.a. For blades subject to Compliance 1.a.; upon logging 3,000 flight hours since new or since reconstruction, as applicable.2.b. For blades subject to Compliance 1.b.; within 200 flight hours after the effective date of this Directive. |\n|                | This Airworthiness Directive becomes effective on 23 November 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |\n\n| Background: | This Directive requires certain actions in order to prevent main rotor blade fatigue damage initiated by fretting corrosion, caused by the incorrect positioning of the blade root reinforcement band. |\n| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 October 2006","sortOrder":0},{"sectionNumber":"AD/SA 315/7","sectionType":"part","heading":"AD/SA 315/7","content":"## AD/SA 315/7","sortOrder":1},{"sectionNumber":"Main Rotor Blades","sectionType":"part","heading":"Main Rotor Blades","content":"## Main Rotor Blades","sortOrder":2},{"sectionNumber":"12/2006","sectionType":"part","heading":"12/2006","content":"## 12/2006","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This is a standard, narrowly-scoped Airworthiness Directive targeting a specific safety defect in specific helicopter models. It has not expanded beyond its original purpose of addressing the main rotor blade fatigue issue caused by incorrect reinforcement band positioning."},"complexity_factors":["Multiple conditional compliance deadlines based on flight hours (four separate timing scenarios: 1.a, 1.b, 2.a, 2.b)","Cross-reference to external technical document (Eurocopter Service Bulletin No. 65-38 R1) without reproducing its contents","Cross-reference to foreign aviation directive (DGAC AD 93-104-034(B) R2)","Technical terminology requiring aviation engineering knowledge (\"fretting corrosion\", \"blade root reinforcement band\", \"dash numbers\")","Nested action requirements: inspection → conditional outcomes (satisfactory/unsatisfactory) → further conditional actions","Part number ranges with \"all dash numbers\" modifier requiring technical interpretation"],"plain_english_summary":"This AD requires owners/operators of Eurocopter SA 315 B (Lama) helicopters with specified main rotor blade part numbers to inspect blades for a reinforcement‑band misassembly that can cause fretting corrosion, metal fatigue and possible blade failure. Inspect per Eurocopter Service Bulletin No. 65‑38 R1; pass = update part markings and return to service, fail = remove blade from service. Compliance deadlines depend on blade hours (near‑term inspections for higher‑hour blades; follow‑ups at defined hour intervals)."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The Directive applies only to SA 315 B helicopters fitted with the listed blade part numbers and prescribes inspection, modification or removal per the Eurocopter Service Bulletin. The stated objective (preventing fatigue from fretting corrosion due to incorrect root reinforcement band positioning) matches the constrained applicability and required actions; the text does not expand the scope beyond those specific aircraft, parts and remedial steps (see Applicability, Requirement, Background, Compliance)."},"complexity_factors":["Targeted technical scope limited to specific main rotor blade part numbers (Applicability)","Requires actions in accordance with an external manufacturer Service Bulletin (Requirement paragraph 2.1 and paragraph 2.3)","Multiple, tiered compliance windows tied to blade flight hours since new or reconstruction (Compliance 1.a/1.b/2.a/2.b), creating monitoring and scheduling burdens","Binary outcome from inspections (modify and return to service, or remove from service) creates potential for immediate replacement costs (Requirement)","Reference to a foreign AD (DGAC AD 93-104-034(B) R2) introduces cross-jurisdictional regulatory context (Requirement/Note)","Short lead/near-term deadlines for high-utilisation blades (effective date 23 November 2006 and Compliance timeframes)","Technical diagnosis depends on detecting fretting corrosion linked to blade root reinforcement band positioning (Background) which may require specialist inspection skills"],"plain_english_summary":"This Airworthiness Directive requires operators of Eurocopter SA 315 B helicopters with specified main rotor blade part numbers to inspect blades per Eurocopter Service Bulletin 65‑38 R1; if checks pass modify and return blades to service, if not remove them. Compliance deadlines vary by logged flight hours. Effective 23 November 2006.\n\nIt aims to prevent fatigue from fretting corrosion linked to incorrect positioning of the blade root reinforcement band. The directive shifts inspection, modification or replacement costs to operators and requires tracking flight hours and following the external service bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sa-315-7-main-rotor-blades","history":"/api/acts/ad-sa-315-7-main-rotor-blades/history","analysis":"/api/acts/ad-sa-315-7-main-rotor-blades/analysis","conflicts":"/api/acts/ad-sa-315-7-main-rotor-blades/conflicts","importantCases":"/api/acts/ad-sa-315-7-main-rotor-blades/important-cases","documents":"/api/acts/ad-sa-315-7-main-rotor-blades/documents"}}