{"id":"F2006L01838","name":"AD/ECUREUIL/111 Amdt 1 - Untimely Firing of Squibs","slug":"ad-ecureuil-111-amdt-1-untimely-firing-of-squibs","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":59652,"registerId":"commonwealth-F2006L01838-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter AS 350 (Ecureuil) Series Heli","sectionType":"division","heading":"Eurocopter AS 350 (Ecureuil) Series Helicopters","content":"### Eurocopter AS 350 (Ecureuil) Series Helicopters\n\n| AD/ECUREUIL/111 Amdt 1 | Untimely Firing of Squibs | 8/2006 DM |\n| ---------------------- | ------------------------- | --------- |\n\n| Applicability: | AS 350 B, BA, BB, B1, B2, B3 and D helicopters equipped as follows:                                                                                                                                                                                                                      |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|                | Goodrich electric hoists 76370-XXX, (all types of motors) and not modified per MOD 073318 (or per Eurocopter AS 350 Alert Service Bulletin (ASB) 25.00.95 issued 16 November 2005); or                                                                                                   |\n|                | Goodrich electric hoists 76370-XXX, not fitted with the Auxilec motor.                                                                                                                                                                                                                   |\n| Requirement:   | 1. If not previously accomplished, deactivate the squib and affix placards in the cockpit and in the cabin near the hoist operator in accordance with paragraph 2.B. of Eurocopter Alert Telex (AT) 25.00.94 dated 25 May 2005 (Eurocopter AS 350 ASB 25.00.94 issued 16 November 2005). |\n|                | 2. If not previously accomplished, comply with the operating instructions specified in paragraph 2.D. of AT 25.00.94 (AS 350 ASB 25.00.94).                                                                                                                                              |\n|                | 3. Comply with the operating instructions specified in paragraph 2.B. of AT 25.00.94 (AS 350 ASB 25.00.94).                                                                                                                                                                              |\n|                | 4. Modify the hoist electrical wiring by eliminating the ground from the hoist squib as specified in paragraph 2.B. of AS350 ASB 25.00.95 issued 16 November 2005.                                                                                                                       |\n|                | Later revisions of the above service bulletins approved by the European Aviation Safety Agency (EASA) may be utilised for compliance with the applicable requirements of this Directive.                                                                                                 |\n|                | Note: EASA AD 2006-0164 refers.                                                                                                                                                                                                                                                          |\n| Compliance:    | For Requirement 1 - Before the next hoisting operation.                                                                                                                                                                                                                                  |\n|                | For Requirement 2 - Immediately following Requirement 1.                                                                                                                                                                                                                                 |\n|                | For Requirement 3 - Prior to installing a hoist.                                                                                                                                                                                                                                         |\n\n|             | For Requirement 4 - Within 30 days after the effective date of this Directive or before installation of an unmodified hoist on a helicopter.                                                                                                                                                                                                |\n| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|             | Later revisions of the above service bulletins approved by the European Aviation Safety Agency (EASA) may be utilised for compliance with the applicable requirements of this Directive.                                                                                                                                                    |\n|             | This Amendment becomes effective on 28 June 2006.                                                                                                                                                                                                                                                                                           |\n| Background: | The French Direction de L’Aviation Civile has advised of the discovery of a potential risk of untimely squib firing which would cause the cable to be cut. Consequently, the original issue of this Directive required the squib function to be inhibited, the manual cable cutter to be operated and operational procedures to be adapted. |\n|             | This Amendment, whilst continuing the requirements of the original issue of this Directive restricts the applicability after the embodiment of MOD 073318 and, at the same time renders mandatory the modification on other helicopters.                                                                                                    |\n|             | The original issue of this Directive became effective on 2 June 2005.                                                                                                                                                                                                                                                                       |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n14 June 2006","sortOrder":0},{"sectionNumber":"AD/ECUREUIL/111 Amdt 1","sectionType":"part","heading":"AD/ECUREUIL/111 Amdt 1","content":"## AD/ECUREUIL/111 Amdt 1","sortOrder":1},{"sectionNumber":"Untimely Firing of Squibs","sectionType":"part","heading":"Untimely Firing of Squibs","content":"## Untimely Firing of Squibs","sortOrder":2},{"sectionNumber":"8/2006 DM","sectionType":"part","heading":"8/2006 DM","content":"## 8/2006 DM","sortOrder":3}],"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":4,"scope_assessment":{"changed":false,"description":"This is an amendment to an existing Airworthiness Directive (AD/ECUREUIL/111). The amendment narrows the applicability (excluding helicopters with MOD 073318) while adding a new mandatory modification requirement for remaining affected aircraft. This represents a refinement rather than scope creep — the original safety concern (untimely squib firing) remains the core focus."},"complexity_factors":["Multiple applicability conditions requiring cross-checking against three different criteria (hoist model, modification status, and motor type)","Four distinct compliance requirements with different deadlines (immediate, before next operation, prior to installation, and 30-day window)","References to external technical documents (Eurocopter Alert Telex 25.00.94, Alert Service Bulletin 25.00.95, and EASA AD 2006-0164) that are not reproduced in the directive itself","Nested conditional logic: 'if not previously accomplished' qualifiers on Requirements 1 and 2","Cross-reference to European Aviation Safety Agency (EASA) approvals for alternative compliance methods"],"plain_english_summary":"This CASA Airworthiness Directive orders owners/operators of certain Eurocopter AS350 helicopters fitted with Goodrich 76370-series electric hoists (unless already modified by MOD 073318 or fitted with an Auxilec motor) to address an electrical fault that could cause the hoist’s explosive cable cutter (squib) to fire unexpectedly. Operators must immediately disable the cutter, adopt interim procedures and placards, and complete a permanent rewire within 30 days to prevent a potentially fatal unintended cable release during rescues."},"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":true,"description":"This Amendment narrows applicability for helicopters that have embodiment of MOD 073318 (they are excluded) while mandating the wiring modification and operational measures for other affected helicopters. The change therefore shifts the set of aircraft required to undergo hardware modification and clarifies mandatory actions for remaining fleets (Background)."},"complexity_factors":["Narrow, equipment-specific applicability: only AS350 B/BA/BB/B1/B2/B3/D models with Goodrich 76370-XXX hoists and particular motor/configuration states are affected (Applicability).","Multiple conditional requirements with different deadlines: deactivation before next hoist use; operating steps immediately after; placards and operating restrictions prior to hoist installation; wiring mod within 30 days or before installing an unmodified hoist (Compliance / Requirements 1–4).","Technical modification mandated: elimination of the ground from the hoist squib requires electrical work on the hoist wiring (Requirement 4; ASB 25.00.95 reference).","Operational changes as well as hardware changes: placards and revised operating procedures must be implemented and followed (Requirements 1–3; AT/ASB cross-references).","Cross-reference to multiple non-legislative documents and authorities: relies on specific Eurocopter Alert Telex / Service Bulletins and allows later EASA-approved revisions to be used for compliance (Requirements; EASA note).","Applicability exception based on embodiment of MOD 073318: helicopters modified per that MOD are excluded, adding record-checking and tracking burden (Background; Applicability).","Potential administrative burden: operators must track modification status, apply placards, update procedures, and schedule wiring mods within tight windows (Compliance timings).","Implementation risk and enforcement ambiguity: accepts later EASA-approved revisions for compliance, which creates operational discretion about which revision applies and when (Later revisions note)."],"plain_english_summary":"This directive requires operators of certain Eurocopter AS350 helicopters fitted with specified Goodrich electric hoists to deactivate the hoist squib, install cockpit and cabin placards, follow updated operating instructions, and modify the hoist wiring to remove the squib ground. It responds to a reported risk of untimely squib firing that could sever the hoist cable, and therefore imposes immediate operational and short-term modification steps on affected aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-111-amdt-1-untimely-firing-of-squibs","history":"/api/acts/ad-ecureuil-111-amdt-1-untimely-firing-of-squibs/history","analysis":"/api/acts/ad-ecureuil-111-amdt-1-untimely-firing-of-squibs/analysis","conflicts":"/api/acts/ad-ecureuil-111-amdt-1-untimely-firing-of-squibs/conflicts","importantCases":"/api/acts/ad-ecureuil-111-amdt-1-untimely-firing-of-squibs/important-cases","documents":"/api/acts/ad-ecureuil-111-amdt-1-untimely-firing-of-squibs/documents"}}