{"id":"F2006B10250","name":"AD/GAZELLE/4 Amdt 5 - Retirement Lives - Fatigue Critical Components","slug":"ad-gazelle-4-amdt-5-retirement-lives-fatigue-critical-components","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55921,"registerId":"commonwealth-F2006B10250-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAZELLE/4 Amdt 5 - Retirement Lives - Fatigue Critical Components","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nEurocopter SA341 and SA342 (Gazelle) Series Helicopters\n\nAD/GAZELLE/4\n\nAmdt 5\n\n  \n\nRetirement Lives \\- Fatigue Critical Components\n\n  \n3/84\n\nApplicability: All models SA 341 and SA 342.\n\nRequirement: All Service Life Limited components shall be retired from service at or before the times shown in the SA341/SA342 Master Servicing Recommendations, Section 5.99 (Issue 1, Amendment 4).\n\nNote 1. The Issue and Amendment quoted above refer to the Airworthiness Limitations section only, rather than the M.S.R. as a whole.\n\nNote 2. Operators of aircraft engaged in operations which involve unusual manoeuvres, such as agricultural, or cattle mustering, of operations where consistently more than five rotor full stop flights per hour are achieved must consult the manufacturer giving full details including previous history of all operations for possible life revision and must advise the Department accordingly. For the purposes of notification two flights concluding with rotors turning while on the ground and the engine at idle or greater power setting shall be counted as equivalent to one flight with rotors to a full stop.\n\nEffective: Forthwith.\n\nBackground: This Directive has been amended to alter base for Service Life Limits to Section 5.99 (was 5.11) of the M.S.R. as approved by the French airworthiness authority (D.G.A.C.).","sortOrder":0}],"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":3,"scope_assessment":{"changed":false,"description":"This amendment represents a technical update to reference numbering only (changing from Section 5.11 to Section 5.99 of the maintenance manual). The fundamental scope — establishing retirement lives for fatigue-critical helicopter components — remains unchanged from the original 1984 directive."},"complexity_factors":["Single substantive requirement with clear reference to external document (Section 5.99 of Master Servicing Recommendations)","Two explanatory notes clarifying scope and operational exceptions","One conditional exception for high-stress operations requiring manufacturer consultation","Minimal defined terms (only 'Service Life Limited components' implied, not explicitly defined in text)","No cross-references to other legislation or regulations within the directive body","Short document (approximately 200 words excluding header)"],"plain_english_summary":"This AD requires all Eurocopter SA341/SA342 Gazelle helicopters to permanently retire specified fatigue‑critical components before the time limits in the manufacturer’s Master Servicing Recommendations (now Section 5.99). Operators with high‑duty use (e.g., agricultural work, frequent full‑stop landings) must provide operational history to the manufacturer, who may shorten component lives and notify the regulator. The update merely aligns the manual’s section numbering."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment alters the authoritative basis for service life limits by shifting the reference from M.S.R. Section 5.11 to Section 5.99 (Background). It does not change the affected fleet (still all SA341/SA342) but adds an explicit duty for operators with high‑cycle or unusual operations to consult the manufacturer and notify the Department for possible life revisions (Note 2), thereby introducing an additional reporting and reassessment pathway."},"complexity_factors":["Cross-reference to an external technical document (SA341/SA342 Master Servicing Recommendations, Section 5.99) makes compliance contingent on consulting that document for actual retirement times (Requirement).","Applicability to all SA341 and SA342 models requires fleet‑wide action rather than case‑by‑case application (Applicability).","Operational reporting obligation: operators with unusual or high‑cycle use must consult the manufacturer and notify the Department, creating additional information‑sharing and potential reassessment (Note 2).","Specific flight‑counting rule (two flights ending with rotors turning on the ground count as one full‑stop flight) adds a non‑standard metric operators must apply to usage records (Note 2).","Immediate effectiveness (‘Forthwith’) reduces lead time for compliance and increases short‑term implementation burden (Effective).","Change of normative reference (from Section 5.11 to 5.99) requires operators and maintainers to update their maintenance planning and record references (Background)."],"plain_english_summary":"This Airworthiness Directive requires all service‑life‑limited parts on Eurocopter SA341 and SA342 (Gazelle) helicopters to be removed from service at or before the retirement times given in the SA341/SA342 Master Servicing Recommendations, Section 5.99. Operators performing high‑cycle or unusual operations (for example agricultural work or cattle mustering) must provide full operational history to the manufacturer for possible life revisions and notify the Department. The directive takes effect immediately and updates the reference base for service limits from Section 5.11 to Section 5.99."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gazelle-4-amdt-5-retirement-lives-fatigue-critical-components","history":"/api/acts/ad-gazelle-4-amdt-5-retirement-lives-fatigue-critical-components/history","analysis":"/api/acts/ad-gazelle-4-amdt-5-retirement-lives-fatigue-critical-components/analysis","conflicts":"/api/acts/ad-gazelle-4-amdt-5-retirement-lives-fatigue-critical-components/conflicts","importantCases":"/api/acts/ad-gazelle-4-amdt-5-retirement-lives-fatigue-critical-components/important-cases","documents":"/api/acts/ad-gazelle-4-amdt-5-retirement-lives-fatigue-critical-components/documents"}}