{"id":"F2006B05200","name":"AD/CESSNA 205/16 Amdt 1 - Bladder Type Fuel Cells","slug":"ad-cessna-205-16-amdt-1-bladder-type-fuel-cells","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45402,"registerId":"commonwealth-F2006B05200-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 205/16 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 205 (210-5) Series Aeroplanes\n\nAD/CESSNA 205/16\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":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: ensuring safe maintenance of bladder-type fuel cells in Cessna 205 aircraft. The amendment removes one requirement (fuel cap testing) to a separate directive and adds minor administrative requirements (log book statements), but does not expand beyond fuel cell safety."},"complexity_factors":["Short, single-purpose directive (approximately 250 words)","Only 3 defined compliance pathways based on modification status","Cross-references to 3 external Cessna documents (SIL SE 84-4, SIL SE 84-9 Rev 1, Owner Advisory SE 82-36A) without reproducing their content","Simple conditional logic: 'if modified, do X; if not modified, do Y; if already compliant, do Z'","No nested exceptions or sub-delegations","Single technical requirement (inspect and purge) with straightforward record-keeping obligation"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators and maintenance organisations of specified Cessna 205 (210-5) aircraft to inspect bladder-type (flexible) wing fuel cells for wrinkles or folds that can trap moisture or contaminants. If defects are found, the fuel system must be purged and the action recorded in the aircraft logbook.\n\nThe rule protects against fuel contamination, engine failure and fire risk by ensuring affected fuel cells are cleaned and documented to maintain airworthiness."},"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":true,"description":"The directive updates earlier material by incorporating the latest revision to Cessna SIL SE 84-9 (Background). It adds a formal log book statement requirement and removes the fuel-cap testing requirement from this instrument, moving that subject to a separate directive (Background). Compliance paths now differ for aircraft modified per SE 84-9 Rev 1 versus unmodified aircraft (Compliance 1–2)."},"complexity_factors":["Relies on external technical documents (Cessna SIL SE 84-4 and SE 84-9 Rev 1) for procedural detail, so the directive is short but implementation requires consulting attachments (Requirement; Compliance 2).","Conditional requirements based on modification status of the aircraft create branching compliance paths (Compliance 1–2).","Time-based compliance deadlines and repeat-action triggers (initial inspection dates, repeat purging at each new Maintenance Release) add scheduling and record-keeping burden (Compliance 1; 3).","Log book entry requirement adds an administrative step and creates an auditable compliance point (Requirement; Compliance 3).","Removal of fuel-cap testing to a separate directive means cross-referencing multiple directives for full fuel-system compliance (Background)."],"plain_english_summary":"This directive requires inspection of bladder-type fuel cells on specified Cessna 205/210-5 aeroplanes per Cessna SIL SE 84-4, recording results in the aircraft log book, and purging the fuel system if wrinkles or folds are found (Requirement; Compliance 1–3). Owners/operators and maintenance personnel must perform and record these checks; aircraft modified under Cessna SIL SE 84-9 Rev 1 follow alternate replacement instructions (Compliance 2)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-205-16-amdt-1-bladder-type-fuel-cells","history":"/api/acts/ad-cessna-205-16-amdt-1-bladder-type-fuel-cells/history","analysis":"/api/acts/ad-cessna-205-16-amdt-1-bladder-type-fuel-cells/analysis","conflicts":"/api/acts/ad-cessna-205-16-amdt-1-bladder-type-fuel-cells/conflicts","importantCases":"/api/acts/ad-cessna-205-16-amdt-1-bladder-type-fuel-cells/important-cases","documents":"/api/acts/ad-cessna-205-16-amdt-1-bladder-type-fuel-cells/documents"}}