{"id":"F2006L02837","name":"AD/DAUPHIN/87 - Optional Ski Installation","slug":"ad-dauphin-87-optional-ski-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":60067,"registerId":"commonwealth-F2006L02837-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","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/87 | Optional Ski Installation | 10/2006 |\n| ------------- | ------------------------- | ------- |\n\n| Applicability: | Models SA 365 N and N1, and AS 365 N2 and N3 helicopters, equipped with the Eurocopter landing gear optional Ski installation.                                                                                                                                                                                                                                                                                        |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with EASA AD 2006-0213.                                                                                                                                                                                                                                                                                                                                                                          |\n| Compliance:    | As from the effective date of this Directive.                                                                                                                                                                                                                                                                                                                                                                         |\n|                | This Airworthiness Directive becomes effective on 28 September 2006.                                                                                                                                                                                                                                                                                                                                                  |\n| Background:    | Eurocopter has discovered that the never exceed speed (Vne) indicated in the Limitations section of the Flight Manual Supplements, related to the optional Ski installation, is higher than the limit design speed of this installation. Prolonged flight at a speed higher than the limit design speed could lead to failure of the Ski support. Such a failure could then prevent a safe landing of the helicopter. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n17 August 2006","sortOrder":0},{"sectionNumber":"AD/DAUPHIN/87","sectionType":"part","heading":"AD/DAUPHIN/87","content":"## AD/DAUPHIN/87","sortOrder":1},{"sectionNumber":"Optional Ski Installation","sectionType":"part","heading":"Optional Ski Installation","content":"## Optional Ski Installation","sortOrder":2},{"sectionNumber":"10/2006","sectionType":"part","heading":"10/2006","content":"## 10/2006","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive enforces a corrective limitation already identified by the manufacturer and requires adoption of the EASA AD measures for the same set of helicopters with optional skis. It does not expand or narrow the population affected beyond that original corrective intent; it simply mandates compliance with the referenced EASA AD."},"complexity_factors":["Normative reference to an external document (EASA AD 2006-0213) — requires obtaining and following another authority's instrument.","Safety‑critical change to an operational limitation (Vne) — requires technical understanding and updating flight manuals and procedures.","Narrow applicability: specific models (SA 365 N/N1, AS 365 N2/N3) with optional ski installation — limited population but high consequence for affected operators.","Directive text does not reproduce detailed corrective steps — implementers must consult the referenced EASA AD for precise actions.","Immediate effective date specified (28 September 2006) — creates a firm compliance deadline for operators and maintainers."],"plain_english_summary":"This Airworthiness Directive requires operators of Eurocopter SA 365 N/N1 and AS 365 N2/N3 helicopters fitted with the optional ski landing gear to carry out the actions set out in EASA AD 2006‑0213, effective 28 September 2006. It corrects the flight manual limit (Vne) because Eurocopter found the manual’s Vne exceeded the ski installation’s design speed. Sustained flight above the design speed could cause ski‑support failure and prevent a safe landing. Compliance and any documentation or operational changes fall to the helicopter operators and maintainers."},"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":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a narrow, specific safety purpose. It has not expanded beyond its original intent of addressing the ski installation speed limitation issue."},"complexity_factors":["Very short document (under 300 words)","Only 1 substantive requirement (comply with external EASA directive)","No defined terms section","No cross-references to other Australian legislation","Simple conditional logic: if you have this equipment on these models, you must comply","Single compliance date with no exceptions or alternative methods"],"plain_english_summary":"This Airworthiness Directive requires operators of certain Eurocopter/SA/AS 365 Dauphin helicopters with optional ski landing gear to comply with EASA AD 2006-0213 from 28 September 2006. \n\nIt corrects an unsafe mismatch between the helicopter Vne and the ski assembly limit to prevent ski-support failure and potential loss of safe landing capability."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dauphin-87-optional-ski-installation","history":"/api/acts/ad-dauphin-87-optional-ski-installation/history","analysis":"/api/acts/ad-dauphin-87-optional-ski-installation/analysis","conflicts":"/api/acts/ad-dauphin-87-optional-ski-installation/conflicts","importantCases":"/api/acts/ad-dauphin-87-optional-ski-installation/important-cases","documents":"/api/acts/ad-dauphin-87-optional-ski-installation/documents"}}