{"id":"F2006B05244","name":"AD/CESSNA 206/39 Amdt 1 - Fuel Filler Caps and Adaptors","slug":"ad-cessna-206-39-amdt-1-fuel-filler-caps-and-adaptors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45554,"registerId":"commonwealth-F2006B05244-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 206/39 Amdt 1 - Fuel Filler Caps and Adaptors","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nCessna 206 Series Aeroplanes\n\nAD/CESSNA 206/39\n\nAmdt 1\n\n  \nFuel Filler Caps and Adaptors 11/88\n\nApplicability: Models with serial numbers: 206-0001 through U20604649 (1964-1978), P206-0001 through P20600647 (1965-1970); unless reduced diameter, raised filler neck fuel caps are installed on all filler openings in accordance with Cessna Service Kit SK182- 85 (refer S.I.L SE 84-16).\n\nRequirement: 1. Visually inspect the wing aft of the fuel filler for indications of inflight fuel leakage.\n\n    2. Visually inspect the fuel cap locking mechanism and seals for cracking, distortion and any condition which might prevent sealing.\n\n    3. Remove the fuel filler caps and inspect the adaptor sealing face for distortion, scratches, corrosion or any condition which may prevent the cap from sealing.\n\n    4. Visually check the sealing and security of the attachment of the adaptor flange to the adaptor plate paying particular attention to the adhesive (if present) between the parts.\n\n    5. Check the fuel cap seal by actuating the locking tab and noting that force is maintained between the cap, seal and adaptor when the tab is in the over-centre locking position.\n\n    6. Conduct a fuel cap leak test in accordance with Cessna SIL SE 82-34.\n\nCompliance: Prior to the issue of the next Maintenance Release after 30 June 1985 and thereafter at each issue of a new Maintenance Release.\n\nBackground: This Amendment deletes the requirement for extensive inspection and testing of fuel filler caps against possible water ingress, for aeroplanes fitted with raised fuel filler necks.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment narrows scope by deleting the prior requirement for extensive water‑ingress inspection/testing for aeroplanes fitted with raised fuel filler necks installed per Service Kit SK182-85, while maintaining routine cap/adaptor inspections and a leak test for the listed serial ranges."},"complexity_factors":["Domain-specific technical tasks (visual inspection, seal and adaptor-face checks, over-centre locking force test)","Multiple sequential actions required (remove caps, inspect adaptor, check adhesive, actuate locking tab, leak test)","References to external service documents for test procedure (Cessna SIL SE 82-34) and modification kit (SK182-85)","Applicability limited by serial-number ranges and conditional exemption, requiring accurate aircraft identification","Compliance timing tied to Maintenance Release cycles and record-keeping obligations","Requires qualified maintenance personnel and access to testing procedure/materials"],"plain_english_summary":"This airworthiness directive requires inspection and leak testing of fuel filler caps and adaptors on specified Cessna 206/P206 serial ranges to detect fuel leakage and seal failure. Maintenance personnel must carry out visual checks, remove caps to inspect adaptor sealing faces and seals, and perform a leak test per Cessna SIL SE 82-34.\n\nIt affects aircraft owners/operators and maintenance organisations, who pay for and must note compliance at the next Maintenance Release; the amendment removes prior extensive water‑ingress testing for aeroplanes fitted with raised filler necks under Service Kit SK182-85."},"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":3,"scope_assessment":{"changed":false,"description":"This amendment narrows the scope slightly from the original directive by removing extensive water-ingress testing requirements for aircraft fitted with raised fuel filler necks. This is a refinement rather than scope creep — it reduces burden for compliant aircraft while maintaining safety standards for others."},"complexity_factors":["Single, specific applicability criterion based on aircraft serial number ranges","One clear exemption condition (raised filler neck caps with specific service kit)","Six numbered procedural requirements with straightforward mechanical inspections","Single cross-reference to external Cessna document (SIL SE 82-34) for leak test procedure","Simple compliance timeline (before next Maintenance Release after fixed date, then recurring)","No nested definitions, conditional logic, or interpretive provisions","Background section provides clear rationale for amendment"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and testing of fuel filler caps and adaptors on specified Cessna 206 series aircraft to stop in‑flight fuel leaks. Owners/operators of the listed serial-numbered aeroplanes must comply, except aircraft already upgraded with reduced-diameter, raised filler neck caps under Cessna Service Kit SK182‑85. It’s safety-critical—fuel leaks risk fire—and Amendment 1 removes extra water-ingress testing for those upgraded aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-206-39-amdt-1-fuel-filler-caps-and-adaptors","history":"/api/acts/ad-cessna-206-39-amdt-1-fuel-filler-caps-and-adaptors/history","analysis":"/api/acts/ad-cessna-206-39-amdt-1-fuel-filler-caps-and-adaptors/analysis","conflicts":"/api/acts/ad-cessna-206-39-amdt-1-fuel-filler-caps-and-adaptors/conflicts","importantCases":"/api/acts/ad-cessna-206-39-amdt-1-fuel-filler-caps-and-adaptors/important-cases","documents":"/api/acts/ad-cessna-206-39-amdt-1-fuel-filler-caps-and-adaptors/documents"}}