{"id":"F2006B08090","name":"AD/CESSNA 210/41 - Fuel Flow Stabilisation Placard - Installation","slug":"ad-cessna-210-41-fuel-flow-stabilisation-placard-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115200,"registerId":"commonwealth-F2006B08090-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/41 - Fuel Flow Stabilisation Placard - Installation","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 210 Series Aeroplanes\n\nAD/CESSNA 210/41 Fuel Flow Stabilisation Placard - Installation\n\n  \n10/79\n\nApplicability: Model 210 with S/Nos. 21057841 to 58220 (with SK205-5 installed) 58221 to 58351\n\n(with SK206-2 installed), 58352 to 63013, 63015 to 63086, 63088 to 63228, 63230 to\n\n63287, 63289 to 63298, 63300 to 63324, 63326 to 63389, 63391 to 63393, 63396 to\n\n63399, 63401, 63403 to 63407, 63412, 63413, 63419, 63424 and 63426. Model T210\n\nwith S/Nos. T210-0001 to T210-0454. Model P210 with S/Nos. P21000001 to 00255, 00257 to 00273, 00275 to 00279, 00281 to 00283, 00287, 00290 and 00292.\n\nDocument: 1. Cessna SIL No. SE79-25, Supplement No. 1 or 2. FAA AD 79-15-01, Amendment 39-3517.\n\nCompliance: Within 100 hours time in service after 31 October 1979.\n\nBackground: The manufacturer has made placards and instructions available to aid in the recognition and elimination of excessive vapour from the aircraft fuel system. In the event of inflight power interruptions engine restart procedures are also detailed.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive focused specifically on placard installation for fuel vapour issues. It has not expanded beyond its original narrow purpose."},"complexity_factors":["Very short document (under 300 words)","Only 4 defined/document references (Cessna SIL, FAA AD, etc.)","Single, clear compliance requirement with straightforward deadline","No nested exceptions or conditional logic","Applicability list is long but purely mechanical (serial number ranges)","No cross-references to other legislation beyond the enabling Civil Aviation Regulations"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of specified Cessna 210, T210 and P210 aircraft to fit a cockpit fuel flow stabilisation placard and provide engine-restart instructions to address excessive fuel vapour. It targets aircraft listed by serial number because fuel vapour can cause in‑flight power interruptions; the placard gives pilots essential recognition and restart guidance. Compliance is mandatory within 100 flight hours after 31 October 1979."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive applies only to the explicitly listed models and serial numbers and mandates a defined retrofit; it does not expand or alter the set of affected aircraft or the nature of the required measure beyond what is stated in the applicability and compliance clauses."},"complexity_factors":["Narrow technical action: requires installation of placard and following instructions (low procedural complexity).","Limited applicability: specific models and a long list of serial numbers constrain scope.","Fixed, short compliance timeframe: must be done within 100 hours TIS after 31 Oct 1979.","Relies on external documents: Cessna SIL No. SE79‑25 (Supplement 1 or 2) and FAA AD 79‑15‑01 for implementation details.","Low operator discretion: directive prescribes the action rather than leaving choice of remedy to operators.","Regulatory enforcement: issued under Civil Aviation Safety Authority (Part 39) so non‑compliance is a regulated breach."],"plain_english_summary":"This Civil Aviation Safety Authority directive requires owners/operators of specified Cessna 210, T210 and P210 aeroplanes (listed by serial number) to fit a fuel‑flow stabilisation placard and follow supplied instructions so crews can recognise and eliminate excessive vapour and restart the engine after inflight power interruptions. Compliance is mandatory within 100 hours time‑in‑service after 31 October 1979, using the Cessna Service Information Letter (SE79‑25) or the referenced FAA AD as the installation and procedural guide. Costs and the work obligation fall to the aircraft owner/operator."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-41-fuel-flow-stabilisation-placard-installation","history":"/api/acts/ad-cessna-210-41-fuel-flow-stabilisation-placard-installation/history","analysis":"/api/acts/ad-cessna-210-41-fuel-flow-stabilisation-placard-installation/analysis","conflicts":"/api/acts/ad-cessna-210-41-fuel-flow-stabilisation-placard-installation/conflicts","importantCases":"/api/acts/ad-cessna-210-41-fuel-flow-stabilisation-placard-installation/important-cases","documents":"/api/acts/ad-cessna-210-41-fuel-flow-stabilisation-placard-installation/documents"}}