{"id":"F2006B05081","name":"AD/CESSNA 180/69 Amdt 1 - Bladder Type Fuel Cells","slug":"ad-cessna-180-69-amdt-1-bladder-type-fuel-cells","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44991,"registerId":"commonwealth-F2006B05081-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 180/69 Amdt 1 - Bladder Type Fuel Cells","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 180, 182 and Wren 460 Series Aeroplanes\n\nAD/CESSNA 180/69\n\nAmdt 1\n\n  \nBladder Type Fuel Cells 6/85\n\nApplicability: All models with S/Nos as listed in Cessna SIL SE 84-4.\n\nRequirement: Inspect fuel cells in accordance with Cessna SIL SE 84-4 and record the result in the aircraft log book. Where cells exhibit wrinkles or folds, purge fuel system of moisture or other contaminants.\n\nNote: Additional information on fuel system purging is contained in Cessna Owner Advisory SE 82-36A.\n\nCompliance: 1. AIRCRAFT NOT MODIFIED IN ACCORDANCE WITH CESSNA SIL SE 84-9,\n\nRev 1.\n\nInitially, before further flight after 31 August 1984 for cells currently fitted, and at installation of any cell after 31 August 1984. Thereafter, for cells that exhibited signs of unacceptable wrinkles or folds at initial inspection, repeat the system purging procedures at each issue of a new Maintenance Release.\n\n    2. AIRCRAFT MODIFIED IN ACCORDANCE WITH CESSNA SIL SE 84-9, Rev 1.\n\nWhen future cell replacement is required, carry out further instructions required by Attachment No. 1 of Cessna SIL SE 84-9 Rev 1.\n\n    3. For aircraft that have complied with the previous issue of this Directive, the log book statement requirement shall be made before the issue of the next Maintenance Release after 30 June 1985.\n\nBackground: This Directive promulgates the latest revision to Cessna SIL SE 84-9 containing “Helpful Hints” useful to maintenance personnel. The fuel cap testing requirement has been removed and now becomes the subject of a separate Directive. Editorial changes and a requirement for log book statements are also included.","sortOrder":0}],"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":3,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: ensuring safe inspection and maintenance of bladder-type fuel cells in specific Cessna aircraft. The changes from the previous version are minor editorial updates, removal of fuel cap testing (spun off to a separate directive), and added log book documentation requirements. The scope has not expanded beyond fuel cell safety for the specified aircraft models."},"complexity_factors":["Short, single-purpose directive (approximately 300 words)","Only 4 defined references to external documents (Cessna SIL SE 84-4, SE 84-9 Rev 1, SE 82-36A, and Maintenance Release)","Three distinct compliance pathways based on aircraft modification status (unmodified vs. modified vs. previously compliant)","Conditional logic: repeat inspections only required if wrinkles/folds were found at initial inspection","No nested definitions or extensive cross-references to other regulations"],"plain_english_summary":"Owners and operators of specified Cessna 180/182 and Wren 460 aircraft must have their bladder-type wing fuel cells inspected for wrinkles or folds that can trap moisture and contaminants. If wrinkles are found the fuel system must be purged and the work recorded in the aircraft log book.\n\nThis mandatory CASA directive affects owners/operators and licensed maintenance engineers — it addresses contamination risks that can lead to engine failure and updates prior requirements by removing fuel-cap testing."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Yes. The directive adopts a revised Cessna SIL (SE 84-9) that adds 'Helpful Hints' and a logbook-statement requirement and explicitly removes the fuel-cap testing requirement from this instrument, deferring fuel-cap testing to a separate directive (Background). This shifts some testing obligations out of this directive while adding mandatory inspection, purging and recording duties here."},"complexity_factors":["Applicability limited to specific serial numbers listed in Cessna SIL SE 84-4 (Applicability) — requires cross-checking external list.","Multiple compliance paths depending on whether aircraft were modified under Cessna SIL SE 84-9, Rev 1 (Compliance) — different future-replacement instructions for modified aircraft.","Procedural obligations reference external manufacturer documents (Cessna SIL SE 84-4, SE 84-9 and Owner Advisory SE 82-36A) (Requirement/Note) — necessitates consulting multiple documents.","Timing and recurrence rules: initial inspection before further flight after a specified date and repeat purging at each new Maintenance Release for affected cells (Compliance) — creates ongoing record-keeping and operational triggers.","Administrative requirement to record compliance in the aircraft logbook and to make logbook statements before the next Maintenance Release after a given date (Compliance/Background).","Removal of a related fuel-cap testing requirement to a separate directive (Background) — monitoring needed to follow that separate instrument."],"plain_english_summary":"Requires owners/operators of specified Cessna 180/182 and Wren 460 aeroplanes to inspect bladder-type fuel cells using Cessna Service Instruction Letter procedures, record the result in the aircraft logbook, and purge the fuel system where fuel‑cell wrinkles or folds are found. Compliance paths differ for aircraft modified under Cessna SIL SE 84-9, and repeat purging may be required at each maintenance release for affected cells. Owners/operators pay inspection, purging and record-keeping costs; maintenance personnel decide corrective action at maintenance releases."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-180-69-amdt-1-bladder-type-fuel-cells","history":"/api/acts/ad-cessna-180-69-amdt-1-bladder-type-fuel-cells/history","analysis":"/api/acts/ad-cessna-180-69-amdt-1-bladder-type-fuel-cells/analysis","conflicts":"/api/acts/ad-cessna-180-69-amdt-1-bladder-type-fuel-cells/conflicts","importantCases":"/api/acts/ad-cessna-180-69-amdt-1-bladder-type-fuel-cells/important-cases","documents":"/api/acts/ad-cessna-180-69-amdt-1-bladder-type-fuel-cells/documents"}}