{"id":"F2006B05227","name":"AD/CESSNA 206/23 - Fuel Reservoir Fitting","slug":"ad-cessna-206-23-fuel-reservoir-fitting","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45499,"registerId":"commonwealth-F2006B05227-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 206/23 - Fuel Reservoir Fitting","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Cessna 206 Series Aeroplanes\n\n \n\nAD/CESSNA 206/23 Fuel Reservoir Fitting 5/78\n\nApplicability: Model TU206 with S/Nos. U20603021 to U20603829.\n\n \n\nModel TU206 with S/No. below U20603021 which has had a fuel reservoir assembly P/N 1216407-( )replaced with a fuel reservoir originating from Cessna since 1 July 1975.\n\n \n\nRequirement: Inspect fuel reservoir upper fitting for correct inside diameter in accordance with Figure 1 of Cessna SL No. SE77-38.\n\n \n\nNote: Attention is also drawn to Cessna SL No. SE78-2.\n\n \n\nCompliance: Within 100 hours time in service after 31 May 1978.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2053},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This airworthiness directive maintains its original narrow scope targeting a specific mechanical defect in identified Cessna aircraft fuel systems. It has not expanded beyond the original safety purpose of preventing failures through mandatory fitting inspection."},"complexity_factors":["Single, straightforward inspection requirement","Limited applicability criteria based on specific aircraft serial numbers and historical part replacement dates","Only one technical cross-reference for compliance procedures (Cessna SL No. SE77-38)","No nested exceptions or conditional logic beyond the applicability section"],"plain_english_summary":"**What this does:** This directive mandates a safety inspection for specific Cessna 206 aircraft to prevent potential fuel system failures.\n\n**Who it affects:** Owners and operators of:\n- Cessna Model TU206 aircraft with serial numbers U20603021 through U20603829\n- Older TU206 aircraft (serial numbers below U20603021) that have had fuel reservoir assembly part number 1216407 replaced with a Cessna-original reservoir since 1 July 1975\n\n**What must be done:** Inspect the fuel reservoir upper fitting to verify it has the correct inside diameter, following the procedure in **Cessna Service Letter SE77-38** (Figure 1). Operators should also consult Cessna Service Letter SE78-2.\n\n**Deadline:** Complete the inspection within **100 hours of flight time** after 31 May 1978.\n\n**Why it matters:** Incorrectly sized fuel reservoir fittings could lead to fuel leaks, engine failure, or fire hazards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-206-23-fuel-reservoir-fitting","history":"/api/acts/ad-cessna-206-23-fuel-reservoir-fitting/history","analysis":"/api/acts/ad-cessna-206-23-fuel-reservoir-fitting/analysis","conflicts":"/api/acts/ad-cessna-206-23-fuel-reservoir-fitting/conflicts","importantCases":"/api/acts/ad-cessna-206-23-fuel-reservoir-fitting/important-cases","documents":"/api/acts/ad-cessna-206-23-fuel-reservoir-fitting/documents"}}