{"id":"F2009L03055","name":"AD/DAUPHIN/10 - Retirement Life - Flexible Couplings on MGB Input End - CANCELLED","slug":"ad-dauphin-10-retirement-life-flexible-couplings-on-mgb-input-end-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80651,"registerId":"commonwealth-F2009L03055-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter SA 360 and SA 365 (Dauphin) S","sectionType":"division","heading":"Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters","content":"### Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters\n\n| AD/DAUPHIN/10 | Retirement Life - FlexibleCouplings on MGB Input End | 9/2009 |\n| ------------- | ---------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                           |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 27 August 2009.                                                                                                                                                                              |\n| Background:  | This unique Australian AD specified a temporary retirement life for the MGB flexible coupling in accordance with SB No. 01.12. Retirement lives are now specified in PRE section 5.99. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n15 July 2009","sortOrder":0},{"sectionNumber":"AD/DAUPHIN/10","sectionType":"part","heading":"AD/DAUPHIN/10","content":"## AD/DAUPHIN/10","sortOrder":1},{"sectionNumber":"Retirement Life - FlexibleCouplings on M","sectionType":"part","heading":"Retirement Life - FlexibleCouplings on MGB Input End","content":"## Retirement Life - Flexible  \nCouplings on MGB Input End","sortOrder":2},{"sectionNumber":"9/2009","sectionType":"part","heading":"9/2009","content":"## 9/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2869},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs its intended function of terminating a temporary safety measure. The original AD was designed as an interim measure until the manufacturer's permanent documentation could be updated. This cancellation reflects the planned conclusion of that temporary regime rather than an expansion or alteration of regulatory scope."},"complexity_factors":["Single operative provision (cancellation of previous directive)","No defined terms or interpretation section","Minimal cross-referencing (only references to Service Bulletin No. 01.12 and PRE section 5.99)","No conditional logic, exceptions, or nested provisions","Very short length (substantive content approximately 50 words)"],"plain_english_summary":"**What this document does**\n\nThis officially cancels a previous aviation safety rule (Airworthiness Directive 10) that applied to Eurocopter SA 360 and SA 365 Dauphin helicopters.\n\n**The old rule**\nThe cancelled rule required operators to **retire** (permanently remove from service) the flexible couplings on the main gearbox (MGB) input end after reaching a specific temporary lifespan. This was a safety measure to prevent mechanical failures.\n\n**Why it is being cancelled**\nThe retirement limits are now included in the aircraft's standard maintenance manual (section 5.99 of the Periodic Review and Examination section). Because the manufacturer now specifies these limits in the standard documentation, the temporary Australian-specific rule is no longer needed.\n\n**What this means for operators**\nFrom 27 August 2009, operators no longer need to follow the specific retirement life mandated by this Australian directive. Instead, they follow the retirement instructions in the aircraft maintenance manual."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dauphin-10-retirement-life-flexible-couplings-on-mgb-input-end-cancelled","history":"/api/acts/ad-dauphin-10-retirement-life-flexible-couplings-on-mgb-input-end-cancelled/history","analysis":"/api/acts/ad-dauphin-10-retirement-life-flexible-couplings-on-mgb-input-end-cancelled/analysis","conflicts":"/api/acts/ad-dauphin-10-retirement-life-flexible-couplings-on-mgb-input-end-cancelled/conflicts","importantCases":"/api/acts/ad-dauphin-10-retirement-life-flexible-couplings-on-mgb-input-end-cancelled/important-cases","documents":"/api/acts/ad-dauphin-10-retirement-life-flexible-couplings-on-mgb-input-end-cancelled/documents"}}