{"id":"F2006L03408","name":"AD/AS 355/66 Amdt 2 - Sliding Door","slug":"ad-as-355-66-amdt-2-sliding-door","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":60856,"registerId":"commonwealth-F2006L03408-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter AS 355 (Twin Ecureuil) Series","sectionType":"division","heading":"Eurocopter AS 355 (Twin Ecureuil) Series Helicopters","content":"### Eurocopter AS 355 (Twin Ecureuil) Series Helicopters\n\n| AD/AS 355/66 Amdt 2 | Sliding Door | 11/2006 |\n| ------------------- | ------------ | ------- |\n\n| Applicability: | AS 355 helicopters, versions E, F, F1, F2, and N, equipped with sliding doors; and without MOD 073287 and/or MOD 073290 or Eurocopter Service Bulletin No. 52.00.22 incorporated.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Check the diameter of the sliding door roller and the dimension of the front end opening of the middle rail, in accordance with paragraph 2.B.1 of Eurocopter AS 355 Alert Service Bulletin No. 05.00.39 Revision 2.2. As a result of the Requirement 1 check, action paragraph 2.B.2 of the Requirement document:a. If criterion C1 is equal to or greater than 5mm, and criterion C2 is equal to or greater than 1.5mm, door operation in flight is allowed.b. If criterion C1 is less than 5mm and/or criterion C2 is less than 1.5mm, door operation in flight is prohibited. A placard specifying this restriction is to be affixed to the instrument panel of the helicopter.Note: EASA AD 2006-0249 refers. |\n| Compliance:    | Before further flight after 3 July 2002; and thereafter at intervals not to exceed 100 flight hours.The initial compliance time remains unchanged by this issue of the Directive.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |\n|                | This Amendment becomes effective on 26 October 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |\n| Background:    | The DGAC received a report of sliding door aft roller dislodgement in flight due to severe wear on the rail. If this deficiency is evident and not corrected, loss of the sliding door could occur during flight.Amendment 1 converted the previous Alert Telex to an Alert Service Bulletin, with no change in technical content; but introduced an additional check criterion in order to prevent the risk of the aft guide roller coming out of the middle rail when the door is opened in flight.                                                                                                                                                                                                                 |\n\n|     | Amendment 2 is issued in response to a new EASA AD, which introduces a revision of the Requirement document, and limits applicability to unmodified aircraft. |\n| --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 September 2006","sortOrder":0},{"sectionNumber":"AD/AS 355/66 Amdt 2","sectionType":"part","heading":"AD/AS 355/66 Amdt 2","content":"## AD/AS 355/66 Amdt 2","sortOrder":1},{"sectionNumber":"Sliding Door","sectionType":"part","heading":"Sliding Door","content":"## Sliding Door","sortOrder":2},{"sectionNumber":"11/2006","sectionType":"part","heading":"11/2006","content":"## 11/2006","sortOrder":3}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"The original directive applied broadly to affected helicopters. Amendment 2 significantly narrowed the scope by limiting applicability to only those aircraft without specific modifications (MOD 073287, MOD 073290, or Service Bulletin 52.00.22). This represents a scope reduction — the regulator recognized that certain modifications already addressed the safety issue, so those modified aircraft no longer need to comply with the inspection requirements."},"complexity_factors":["Multiple nested conditions: applicability depends on helicopter model AND door type AND absence of three specific modifications","Measurement-based decision tree with two separate criteria (C1 ≥ 5mm, C2 ≥ 1.5mm) determining operational restrictions","Cross-references to external technical documents: Eurocopter Alert Service Bulletin 05.00.39 Revision 2.2, EASA AD 2006-0249, and three specific modification numbers","Dual compliance timeline: initial deadline (before further flight after 3 July 2002) plus recurring interval (every 100 flight hours)","Amendment history requires understanding of previous versions (Amendment 1 converted Alert Telex to Alert Service Bulletin; Amendment 2 limits applicability)"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Eurocopter AS355 E/F/F1/F2/N helicopters with sliding doors (unless modified per MOD 073287, MOD 073290, or SB 52.00.22) to inspect the door roller diameter and the middle-rail opening for wear per Eurocopter ASB 05.00.39.\n\nIf wear is below safety limits the door must be restricted from in‑flight opening and a placard fitted. First inspection was required before next flight after 3 July 2002, repeat every 100 FH; amendment effective 26 Oct 2006."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 2 narrows the Directive's scope by limiting applicability to unmodified aircraft (excluding those with MOD 073287 and/or MOD 073290 or with Eurocopter Service Bulletin No. 52.00.22 incorporated) and issues a revised Requirement document aligned with a new EASA AD (Applicability; Background)."},"complexity_factors":["Technical inspection requirement: precise measurements of roller diameter and rail opening using criteria C1 and C2 determine allowed action (Requirement; Eurocopter AS 355 Alert Service Bulletin No. 05.00.39 Rev 2.2).","Binary operational outcome: thresholds create a clear pass/fail that either permits in-flight door operation or mandates prohibition and placarding (Requirement).","Applicability exceptions: only applies to AS 355 E/F/F1/F2/N with sliding doors and without MOD 073287 and/or MOD 073290 or Eurocopter SB No. 52.00.22 incorporated, which narrows the affected population (Applicability).","Compliance timing and recurrence: initial inspection before further flight after 3 July 2002, then every 100 flight hours, creating a recurring maintenance burden for affected operators (Compliance).","Implementation cost and who pays: inspections, measurement tools, record-keeping, placard installation, and any operational restrictions are borne by aircraft operators (Requirement; Compliance).","Regulatory linkage and revision pedigree: the Amendment adopts a revised Requirement document in response to an EASA AD, creating cross-jurisdictional dependency on external service/airworthiness materials (Background; note referencing EASA AD 2006-0249).","Operational impact: prohibition of door operation in flight where criteria fail imposes immediate operational constraint and potential mission or commercial disruption for affected flights (Requirement)."],"plain_english_summary":"This Airworthiness Directive requires operators of certain Eurocopter AS 355 helicopters with sliding doors to measure the door roller diameter and the middle-rail front opening to specific tolerances (per the Eurocopter Alert Service Bulletin). If measurements fall below set thresholds, flight operation of the sliding door is prohibited and a placard must be fitted. The rule aims to prevent roller dislodgement and possible door loss in flight and applies only to helicopters without specified modifications or service bulletin incorporation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-as-355-66-amdt-2-sliding-door","history":"/api/acts/ad-as-355-66-amdt-2-sliding-door/history","analysis":"/api/acts/ad-as-355-66-amdt-2-sliding-door/analysis","conflicts":"/api/acts/ad-as-355-66-amdt-2-sliding-door/conflicts","importantCases":"/api/acts/ad-as-355-66-amdt-2-sliding-door/important-cases","documents":"/api/acts/ad-as-355-66-amdt-2-sliding-door/documents"}}