{"id":"F2006B09607","name":"AD/EXTRA/8 - Fuel selector valve leakage","slug":"ad-extra-8-fuel-selector-valve-leakage","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54355,"registerId":"commonwealth-F2006B09607-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\nExtra EA-300 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/EXTRA/8 Fuel Selector Valve Leakage 7","sectionType":"part","heading":"AD/EXTRA/8 Fuel Selector Valve Leakage 7/2003","content":"# AD/EXTRA/8 Fuel Selector Valve Leakage 7/2003\n\nTX\n\nApplicability: Extra EA300S, EA300L and EA200 aeroplanes.\n\nRequirement: Carry out an inspection and if necessary repairs of the fuel selector valve in accordance with Extra Flugzeugbau GmbH service Letter 300-09-02.\n\nNote: LBA AD 2002-408 refers.\n\nCompliance: Prior to the next aerobatic flight.\n\nThis Airworthiness Directive becomes effective on 9 May 2003.\n\nBackground: There has been several reports of the fuel selector valve not operating correctly. A faulty fuel selector valve can allow fuel to drain from the centre tank to the wing tanks, which must be empty for aerobatics.\n\n![Signature of James Coyne, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nJim Coyne\n\nDelegate of the Civil Aviation Safety Authority 6 May 2003\n\n![](image.001.png)","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope remains limited to inspection and, where needed, repair of the fuel selector valve on specified Extra EA-300/EA-200 models, to be completed before the next aerobatic flight. The instrument does not expand applicability or introduce ongoing monitoring, additional affected parts, or broader operational restrictions beyond the stated compliance action (Applicability; Requirement; Compliance; Background)."},"complexity_factors":["Narrow applicability to three specific Extra models reduces administrative complexity (Applicability).","Single, short-term compliance action (inspect and repair if needed) with a one-off deadline — prior to the next aerobatic flight — lowers procedural complexity but imposes immediate scheduling pressure (Compliance).","Mandate references an external manufacturer service letter (Extra Flugzeugbau service Letter 300-09-02), creating dependency on that document for technical steps and interpretation (Requirement).","The phrase 'if necessary repairs' delegates technical judgement to maintenance personnel/operators, creating limited discretion about what constitutes a necessary repair (Requirement).","Operators bear direct costs and must organise the work, so compliance cost and logistics fall on private owners/operators rather than the regulator (Requirement; Compliance).","Cross-reference to a foreign authority AD (LBA AD 2002-408) adds an international-certification trace but not additional procedural steps in this instrument (Note).","Legal basis stated under CASR subregulation 39.1(1) is straightforward; no layered amendment, exemptions, or reporting regimes are created in the text provided (preamble)."],"plain_english_summary":"Requires owners/operators of Extra EA-300S, EA-300L and EA-200 aeroplanes to inspect the fuel selector valve and, if needed, repair it per Extra Flugzeugbau service Letter 300-09-02. The directive aims to stop fuel leaking from the centre tank into wing tanks, a condition that would make aerobatic flight unsafe (Background). Compliance must be done before the next aerobatic flight; operators must arrange and fund the inspection/repairs and follow the manufacturer instructions (Applicability; Requirement; Compliance)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific mechanical defect in specific aircraft models. The scope remains tightly focused on the fuel selector valve issue as originally identified."},"complexity_factors":["Very short document (under 300 words)","Only 3 aircraft models specified in applicability","Single straightforward requirement with one referenced external document","No defined terms section","No nested conditions or exceptions","Simple compliance deadline ('prior to next aerobatic flight')","Clear causal chain in background section"],"plain_english_summary":"CASA has issued a binding safety order for Extra EA300S, EA300L and EA200 aeroplanes after a fuel selector valve defect that can let centre‑tank fuel leak into wing tanks. Owners/operators must inspect and, if needed, repair the valve per the manufacturer’s service instructions before the next aerobatic flight. It affects anyone flying these Extras aerobatically and matters because such leaks can create dangerous weight shift, fuel starvation or fire and prohibit legal aerobatic operation if not fixed."},"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-extra-8-fuel-selector-valve-leakage","history":"/api/acts/ad-extra-8-fuel-selector-valve-leakage/history","analysis":"/api/acts/ad-extra-8-fuel-selector-valve-leakage/analysis","conflicts":"/api/acts/ad-extra-8-fuel-selector-valve-leakage/conflicts","importantCases":"/api/acts/ad-extra-8-fuel-selector-valve-leakage/important-cases","documents":"/api/acts/ad-extra-8-fuel-selector-valve-leakage/documents"}}