{"id":"F2006B08553","name":"AD/CHA/26 - Gascolator Bowl","slug":"ad-cha-26-gascolator-bowl","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51353,"registerId":"commonwealth-F2006B08553-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\nAmerican Champion (Aeronca, Bellanca) Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CHA/26 Gascolator Bowl 12/2003","sectionType":"part","heading":"AD/CHA/26 Gascolator Bowl 12/2003","content":"# AD/CHA/26 Gascolator Bowl 12/2003\n\nApplicability: Bellanca (Champion/Aeronca) 7AC, 7BCM, and 11AC models incorporating a metal gascolator.\n\nRequirement: 1. If the aircraft is equipped with a metal gascolator bowl that does not have a built in quick-drain arrangement:\n\n    (a) Slowly rock the wings of the aircraft in accordance with Bellanca (Champion/Aeronca) supplement to \"Service Helps and Hints\", Nos. 15 and 18, reissued July 1, 1964, so that water lying in the fuel tank can settle into the gascolator bowl.\n\n    (b) Remove the gascolator bowl and completely clean the bowl and the strainer screen to remove accumulations of water and foreign matter.\n\nNote 1: If operating conditions are such that large quantities of water are found during these inspections, the gascolator bowl should be removed more frequently and the carburettor bowl should also be drained periodically.\n\n2. If the aircraft is equipped with a metal gascolator bowl that does have a built in quick-drain arrangement, remove the gascolator bowl and completely clean the bowl and the strainer screen to remove accumulations of water and foreign matter.\n\nNote 2: FAA AD 47-20-01 Amendment 39-3712 refers.\n\nCompliance: For Requirement 1: At intervals not to exceed 25 hours time in service.\n\nFor Requirement 2: at each annual inspection\n\nNote 3: Quick-drain shall be used during each pre-flight inspection.\n\nThis Airworthiness Directive becomes effective on 27 November 2003.","sortOrder":1}],"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope aligns with the directive text: it applies only to the listed Bellanca (Champion/Aeronca) 7AC, 7BCM and 11AC models with metal gascolator bowls and prescribes inspection/cleaning obligations and specified compliance intervals. No expansion or narrowing of applicability is indicated in the AD itself."},"complexity_factors":["Narrow applicability to specific Bellanca (Champion/Aeronca) models (7AC, 7BCM, 11AC) with metal gascolator bowls — low legal scope but requires accurate fleet identification","Two compliance tracks depending on whether the gascolator has a built‑in quick‑drain (different intervals: 25 hours vs annual) adds operational variation","Requires physical actions (rocking wings per Bellanca supplement, bowl removal, cleaning of bowl and strainer) that impose labour and access constraints","References external manufacturer material (Bellanca supplement Nos.15 and 18, reissued 1 July 1964) which operators must locate and follow","Notes require increased frequency and additional carburettor draining in some operating conditions — introduces monitoring and discretionary judgement by operators","Regulatory basis named (CASR subreg 39.1(1)) concentrates enforcement discretion with a CASA delegate but prescribes mandatory corrective action","Effective date and interaction with FAA AD 47-20-01 are noted, creating a cross‑jurisdictional reference to interpretive material"],"plain_english_summary":"Requires owners/operators of Bellanca (Champion/Aeronca) 7AC, 7BCM and 11AC aircraft with metal gascolator bowls to inspect, remove and clean the gascolator bowl and strainer to remove water and debris, and to use a quick‑drain where fitted. Compliance intervals are every 25 flight hours for bowls without a quick‑drain and at each annual inspection for bowls with a quick‑drain; pre‑flight use of the quick‑drain is also required.\n\nIssued under CASR by a CASA delegate, the rule makes operators responsible for recurring inspection, cleaning and associated labour and parts costs and a small change to pre‑flight/maintenance routines."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific unsafe condition (water contamination in fuel systems). It has not expanded beyond its original safety purpose."},"complexity_factors":["Single purpose directive with straightforward applicability (3 specific aircraft models)","Only 2 main requirements with clear conditional split (presence/absence of quick-drain)","Minimal defined terms (only 'time in service' implied)","No cross-references to other legislation beyond a single FAA AD citation for background","Simple compliance schedule (25 hours vs annual inspection)","Total length is approximately 250 words"],"plain_english_summary":"Australia’s Civil Aviation Safety Authority requires owners/operators of Bellanca/Champion/Aeronca 7AC, 7BCM and 11AC aircraft with metal gascolators to regularly inspect and clean gascolator bowls and use any quick‑drain before flight to prevent water/debris from entering the engine. The AD makes periodic cleaning or annual stripping mandatory (frequency depends on whether a quick‑drain is fitted). It addresses water-induced engine stoppage and has been effective since 27 November 2003."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cha-26-gascolator-bowl","history":"/api/acts/ad-cha-26-gascolator-bowl/history","analysis":"/api/acts/ad-cha-26-gascolator-bowl/analysis","conflicts":"/api/acts/ad-cha-26-gascolator-bowl/conflicts","importantCases":"/api/acts/ad-cha-26-gascolator-bowl/important-cases","documents":"/api/acts/ad-cha-26-gascolator-bowl/documents"}}