{"id":"F2006B09399","name":"AD/ECUREUIL/98 - Fuel - Fuel Bleed Lever","slug":"ad-ecureuil-98-fuel-fuel-bleed-lever","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53744,"registerId":"commonwealth-F2006B09399-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nEurocopter AS 350 (Ecureuil) Series Helicopters","sortOrder":0},{"sectionNumber":"AD/ECUREUIL/98 Fuel - Fuel Bleed Lever 6","sectionType":"part","heading":"AD/ECUREUIL/98 Fuel - Fuel Bleed Lever 6/2004","content":"# AD/ECUREUIL/98 Fuel \\- Fuel Bleed Lever 6/2004\n\nApplicability: Eurocopter AS 350 helicopter versions B, BA, BB, B1, B2, B3, D and EC 130 B4 helicopters, all pre-MOD 073239.\n\nRequirement: 1. Modify the fuel bleed in accordance with the instructions detailed in paragraphs\n\n2.B and 2.C of Eurocopter AS 350 Alert Service Bulletin (ASB) No. 28.00.16 dated 3 March 2004, or ASB 28A001 dated 3 March 2004 as applicable.\n\n2. Do not fit pre-MOD 073239 fuel bleed levers.\n\nNote: DGAC AD’s F-2004-033 and F-2004-034 refer.\n\nCompliance: For Requirement 1: Within 100 flying hours or 6 months after the effective date of this Directive, whichever occurs first.\n\nFor Requirement 2: From the effective date of this Directive. This Airworthiness Directive becomes effective on 10 June 2004.\n\nBackground: The loss of the fuel bleed lever in flight could lead to the lever colliding with the tail rotor.\n\n![Signature of James Coyne, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 30 April 2004\n\n![](image.001.png)","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical defect in specific helicopter models. The scope remains precisely limited to the fuel bleed lever issue identified in the background."},"complexity_factors":["Single, clearly defined applicability (specific helicopter models and serial number range)","Only two straightforward requirements with clear compliance deadlines","Minimal cross-referencing (only to two French aviation authority directives and one Eurocopter service bulletin)","No nested exceptions or conditional logic","Short document (approximately 250 words)","Only one defined term used (MOD 073239, which is explained contextually)"],"plain_english_summary":"This CASA safety order requires owners/operators of certain Eurocopter AS350 and EC130 B4 helicopters to modify the fuel bleed lever (MOD 073239) to prevent it detaching in flight and striking the tail rotor.  \n\nAffected helicopters must be modified by 10 June 2004 or within 100 flying hours/6 months (whichever is first), and the installation of unmodified bleed levers is banned immediately—to eliminate a failure mode that could destroy the tail rotor and cause a crash."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No. The Directive implements a targeted safety action described in the Background: modify the fuel bleed lever per the Eurocopter Alert Service Bulletin and prohibit fitting pre‑MOD 073239 levers. It applies only to the listed AS350/EC130 models that are pre‑MOD 073239 and sets a 100‑flying‑hour or six‑month compliance window; it does not expand applicability or impose obligations beyond those corrective measures."},"complexity_factors":["Technical modification required to a flight‑critical component (fuel bleed lever) increases maintenance complexity (Requirement).","Directive mandates compliance with manufacturer Alert Service Bulletin (ASB No. 28.00.16 / 28A001), so technical instructions are external and detailed (Requirement).","Applicability limited to specific helicopter models and to units described as pre‑MOD 073239, requiring record checks of modification status (Applicability).","Prohibition on fitting pre‑MOD 073239 bleed levers imposes parts‑supply and procurement constraints on operators and maintainers (Requirement 2).","Short compliance window (100 flying hours or 6 months) creates scheduling pressure for operators (Compliance).","Reference to CASA delegate authority and foreign DGAC ADs introduces regulatory cross‑references and enforcement reliance (front matter; Note)."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Eurocopter AS350 (B, BA, BB, B1, B2, B3, D) and EC130 B4 helicopters that are pre‑MOD 073239 to modify the fuel bleed lever per the Eurocopter Alert Service Bulletin and to stop fitting pre‑MOD 073239 bleed levers. CASA issued it to prevent in‑flight loss of the bleed lever that could collide with the tail rotor. Owners/operators pay for and schedule the work and must comply within 100 flying hours or six months; CASA enforces compliance."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-98-fuel-fuel-bleed-lever","history":"/api/acts/ad-ecureuil-98-fuel-fuel-bleed-lever/history","analysis":"/api/acts/ad-ecureuil-98-fuel-fuel-bleed-lever/analysis","conflicts":"/api/acts/ad-ecureuil-98-fuel-fuel-bleed-lever/conflicts","importantCases":"/api/acts/ad-ecureuil-98-fuel-fuel-bleed-lever/important-cases","documents":"/api/acts/ad-ecureuil-98-fuel-fuel-bleed-lever/documents"}}