{"id":"F2006B08775","name":"AD/DAUPHIN/65 - Landing Gear Brace Strut Actuator","slug":"ad-dauphin-65-landing-gear-brace-strut-actuator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52098,"registerId":"commonwealth-F2006B08775-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nEurocopter SA 360 and SA 365 (Dauphin) Series Helicopters","sortOrder":0},{"sectionNumber":"AD/DAUPHIN/65 Landing Gear Brace Strut A","sectionType":"part","heading":"AD/DAUPHIN/65 Landing Gear Brace Strut Actuator 11/2003","content":"# AD/DAUPHIN/65 Landing Gear Brace Strut Actuator 11/2003\n\nDM\n\nApplicability: Model AS 365 helicopters, versions N, N1, N2, and N3 fitted with main landing gear brace strut actuator P/N 19570-XXX.\n\nRequirement: Accomplish the requirements of paragraph 2.B. of Eurocopter Alert Service Bulletin No. 32.00.10.\n\nNote: DGAC AD 2003-321(A) refers.\n\nCompliance: a. For actuators installed on aircraft for more than 6 years at the effective date of this Directive on aircraft which have been operated in tropical, humid or salt- laden atmospheric conditions; within 30 days after 10 September 2003.\n\n    b. For actuators installed on aircraft for more than 6 years at the effective date of this Directive on aircraft which have been operated in normal climactic conditions; or for actuators installed on aircraft for more than 4 years but less than 6 years at the effective date of this Directive on aircraft operated in tropical, humid or in salt-laden atmospheric conditions; within 3 months after 10 September 2003\n\n    c. Upon the accumulation of 6 years after installation, for actuators installed on aircraft operated in normal climatic conditions.\n\n    d. Upon the accumulation of 4 years after installation, for actuators installed on aircraft operated in tropical, humid or salt-laden atmospheric conditions.\n\n    e. Before installation on an aircraft, for any brace strut actuator previously held as spares.\n\nThis Airworthiness Directive becomes effective on 10 September 2003.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The text does not indicate any change from an earlier scope. It applies specifically to AS365 N, N1, N2 and N3 helicopters fitted with actuator P/N 19570‑XXX and mandates actions per the cited service bulletin, with staged compliance deadlines and an effective date of 10 September 2003."},"complexity_factors":["Relies on an external manufacturer service bulletin for the technical corrective actions (Requirement: para 2.B).","Tiered compliance timetable tied to actuator service life and environmental exposure (Compliance: multiple age/environment conditions).","Operators must determine and document operating environment (tropical/humid/salt‑laden vs normal) to calculate deadlines.","Recordkeeping and traceability required to establish installation date and accumulate service life for each actuator.","Spare‑parts rule requires compliance before installation, affecting inventory management (Compliance: spare parts).","Enforcement rests with CASA under CASR subregulation 39.1(1), creating administrative oversight and potential inspection burden.","Cross‑reference to a foreign authority AD (DGAC AD 2003‑321(A)) introduces potential alignment issues between directives."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Eurocopter AS365 (Dauphin) N‑series helicopters fitted with main landing‑gear brace strut actuator P/N 19570‑XXX to perform the maintenance actions set out in Eurocopter Alert Service Bulletin No. 32.00.10 para 2.B (Requirement). Deadlines vary by actuator age and the aircraft's operating environment; owners/operators must schedule and fund the work and ensure any spares meet the requirement before installation (Compliance; effective 10 September 2003)."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a focused, single-purpose scope: addressing a specific unsafe condition in a defined aircraft component. The scope remains tightly constrained to the landing gear brace strut actuator issue and has not expanded beyond this original safety purpose."},"complexity_factors":["Multiple conditional compliance deadlines based on two variables (environmental conditions and time-in-service)","Cross-reference to external technical document (Eurocopter Alert Service Bulletin No. 32.00.10) without reproducing its contents","Reference to foreign aviation authority directive (DGAC AD 2003-321(A))","Specific part number applicability (P/N 19570-XXX) requiring technical verification","Nested conditional logic in compliance section (paragraphs a through e)"],"plain_english_summary":"The Civil Aviation Safety Authority has issued a safety order for Eurocopter AS365 Dauphin (N/N1/N2/N3) helicopters addressing a potential defect in main landing gear brace strut actuators (P/N 19570‑XXX). Operators, owners, maintenance organisations and holders of spare actuators must inspect or replace affected parts per the Eurocopter service bulletin within timeframes tied to part age and operating environment. The measure prevents possible landing‑gear failure during takeoff or landing."},"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-dauphin-65-landing-gear-brace-strut-actuator","history":"/api/acts/ad-dauphin-65-landing-gear-brace-strut-actuator/history","analysis":"/api/acts/ad-dauphin-65-landing-gear-brace-strut-actuator/analysis","conflicts":"/api/acts/ad-dauphin-65-landing-gear-brace-strut-actuator/conflicts","importantCases":"/api/acts/ad-dauphin-65-landing-gear-brace-strut-actuator/important-cases","documents":"/api/acts/ad-dauphin-65-landing-gear-brace-strut-actuator/documents"}}