{"id":"F2006L01049","name":"AD/BELL 430/6 - Fuel Valve Switch","slug":"ad-bell-430-6-fuel-valve-switch","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":58342,"registerId":"commonwealth-F2006L01049-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron Canada (BHTC) 43","sectionType":"division","heading":"Bell Helicopter Textron Canada (BHTC) 430 Series Helicopters","content":"### Bell Helicopter Textron Canada (BHTC) 430 Series Helicopters\n\n| AD/BELL 430/6 | Fuel Valve Switch | 6/2006 DM |\n| ------------- | ----------------- | --------- |\n\n| Applicability: | Model 430 helicopters.                                                                                                                                                                                                                                                                                                                                                                                              |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Rewire the fuel valve switch, part number (P/N) 10648BH1-1, in accordance with the instructions provided in the Technical Bulletin 430-03-33 dated 11 June 2003 or later revisions approved by Chief, Continuing Airworthiness, Transport Canada.                                                                                                                                                                   |\n|                | Note: Transport Canada AD CF-2006-03 refers.                                                                                                                                                                                                                                                                                                                                                                        |\n| Compliance:    | No later than 10 May 2006.                                                                                                                                                                                                                                                                                                                                                                                          |\n|                | This Airworthiness Directive becomes effective on 10 April 2006.                                                                                                                                                                                                                                                                                                                                                    |\n| Background:    | Transport Canada has advised that an investigation into a Bell 222 helicopter incident in the United States revealed that the fuel shut-off switch, P/N 10648BH1-1, failed in flight causing the fuel valve to close and the engine to shut down. Although no failures have been reported in Australia, review of the Canadian Service Difficulty Report database identified two other incidents of switch failure. |\n|                | To ensure the fuel supply is not interrupted as a result of a possible fuel valve switch failure, this Directive requires rewiring of the switch so that the fuel valve will stay open in the event of a fuel valve switch failure.                                                                                                                                                                                 |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n4 April 2006","sortOrder":0},{"sectionNumber":"AD/BELL 430/6","sectionType":"part","heading":"AD/BELL 430/6","content":"## AD/BELL 430/6","sortOrder":1},{"sectionNumber":"Fuel Valve Switch","sectionType":"part","heading":"Fuel Valve Switch","content":"## Fuel Valve Switch","sortOrder":2},{"sectionNumber":"6/2006 DM","sectionType":"part","heading":"6/2006 DM","content":"## 6/2006 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":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific safety defect in a specific helicopter model's fuel system. The directive targets exactly the problem identified (switch failure causing fuel valve closure) with exactly the remedy required (rewiring). No scope creep is evident."},"complexity_factors":["Single, specific mechanical action required (rewiring one switch)","Only one defined part number (P/N 10648BH1-1)","Single external reference document (Technical Bulletin 430-03-33)","No nested conditions, exceptions, or alternative compliance methods","Clear applicability (Model 430 helicopters only)","Straightforward compliance date with no phased implementation"],"plain_english_summary":"This AD requires Australian operators of Bell 430 helicopters to rewire a specific fuel valve switch (PN 10648BH1-1) per Bell Technical Bulletin 430-03-33 (or later approved revision). The change ensures a switch failure leaves the fuel valve open to prevent unintended engine shutdowns—responding to similar failures on Bell models. Compliance was required by 10 May 2006 (effective 10 Apr 2006)."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive sets a targeted requirement for Model 430 helicopters to rewire a specified fuel valve switch to prevent unintended closure. The supplied text shows no expansion beyond that original, safety‑focused objective: applicability is limited to Model 430, the required action is a single modification per an approved Technical Bulletin, and a compliance deadline is specified."},"complexity_factors":["Narrow, single‑part technical fix: requires rewiring a specific part number (Requirement: 'rewire the fuel valve switch, P/N 10648BH1-1').","Dependence on external technical instructions: modification must follow Technical Bulletin 430-03-33 or later revisions approved by Chief, Continuing Airworthiness, Transport Canada (Requirement).","Safety‑critical consequence raises urgency and verification needs: motive drawn from reported switch failures and an incident causing engine shutdown (Background).","Fixed compliance window and effective date impose scheduling pressure on operators and maintenance providers (Compliance: effective 10 April 2006; comply by 10 May 2006).","Regulatory cross-reference: cites Transport Canada AD CF-2006-03, creating interjurisdictional alignment and reliance on another regulator's findings (Requirement/Background).","Limited administrative complexity: applies only to Model 430 helicopters, reducing scope but concentrating compliance costs on the fleet owners/operators (Applicability)."],"plain_english_summary":"This Airworthiness Directive orders owners/operators of Bell 430 helicopters to rewire the fuel valve switch (P/N 10648BH1-1) following Technical Bulletin 430-03-33 so that a switch failure will not close the fuel valve. It applies to Model 430 helicopters, must be done by 10 May 2006, and became effective 10 April 2006. The stated purpose is to prevent in‑flight engine shutdown caused by a fuel valve switch failure (Transport Canada AD CF-2006-03 is referenced)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-430-6-fuel-valve-switch","history":"/api/acts/ad-bell-430-6-fuel-valve-switch/history","analysis":"/api/acts/ad-bell-430-6-fuel-valve-switch/analysis","conflicts":"/api/acts/ad-bell-430-6-fuel-valve-switch/conflicts","importantCases":"/api/acts/ad-bell-430-6-fuel-valve-switch/important-cases","documents":"/api/acts/ad-bell-430-6-fuel-valve-switch/documents"}}