{"id":"F2006B09323","name":"AD/ECUREUIL/10 Amdt 5 - Retirement Life - Fatigue Critical Components","slug":"ad-ecureuil-10-amdt-5-retirement-life-fatigue-critical-components","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53473,"registerId":"commonwealth-F2006B09323-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ECUREUIL/10 Amdt 5 - Retirement Life - Fatigue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 AS 350 (Ecureuil) Series Helicopters\n\nAD/ECUREUIL/10\n\nAmdt 5\n\n  \nRetirement Life \\- Fatigue Critical Components 11/90\n\nApplicability: All models.\n\nRequirement: All Service Life Limited components shall be retired from service at or before the times shown in the AS 350 series Master Servicing Recommendations, Section 5.99, at the following issue and revision status:\n\n| AS350B,D | Issue 2 | Revision 10   |\n| -------- | ------- | ------------- |\n| AS350B1  | Issue 1 | Revision 4    |\n| AS350B2  | Issue 1 | Initial issue |\n\nNote 1: The Issue and Revision numbers quoted above refer to the Airworthiness Limitations section only, rather than the MSR as a whole.\n\nNote 2: Operators of aircraft engaged in unusual manoeuvres, such as agricultural, or cattle mustering or operations where consistently more than four 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 Authority accordingly. For the purposes of notification two flights concluding with rotor 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\nCompliance: Forthwith.\n\nBackground: This Directive has been updated to include all models. Reference to SB 01-18 has been deleted as the affected components are no longer listed in the schedules.\n\nReference to SB 01-20 has also been deleted as the affected bolt lives have been included in the schedules.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1632},"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"Amendment 5 expanded the directive's coverage to include 'all models' of the AS 350 series (previously restricted to specific variants), and consolidated content by removing references to outdated Service Bulletins (SB 01-18 and SB 01-20) whose requirements are now incorporated directly into the Master Servicing Recommendation schedules."},"complexity_factors":["Requires cross-referencing external technical manuals (Master Servicing Recommendations) with specific issue/revision numbers","Model-specific documentation requirements (three different document versions for different variants)","Conditional compliance calculation for high-utilisation operations (unusual manoeuvres definition)","Technical aviation terminology (Service Life Limited components, rotor full stop flights)","Specific numeric thresholds requiring operational counting (four flights per hour benchmark)"],"plain_english_summary":"This safety directive requires Eurocopter AS350 (Ecureuil) operators to retire specified fatigue‑prone components at or before the life limits in the aircraft’s Master Servicing Recommendations and to use the model‑specific document versions required. Operators conducting agricultural, cattle‑mustering, or high landing‑rate operations must supply operational histories to the manufacturer for possible life‑limit adjustments and notify CASA. Compliance is required forthwith."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-10-amdt-5-retirement-life-fatigue-critical-components","history":"/api/acts/ad-ecureuil-10-amdt-5-retirement-life-fatigue-critical-components/history","analysis":"/api/acts/ad-ecureuil-10-amdt-5-retirement-life-fatigue-critical-components/analysis","conflicts":"/api/acts/ad-ecureuil-10-amdt-5-retirement-life-fatigue-critical-components/conflicts","importantCases":"/api/acts/ad-ecureuil-10-amdt-5-retirement-life-fatigue-critical-components/important-cases","documents":"/api/acts/ad-ecureuil-10-amdt-5-retirement-life-fatigue-critical-components/documents"}}