{"id":"F2006B05122","name":"AD/CESSNA 185/31 - Fuel Tank Filler Neck","slug":"ad-cessna-185-31-fuel-tank-filler-neck","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45142,"registerId":"commonwealth-F2006B05122-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 185/31 - Fuel Tank Filler Neck","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 185 Series Aeroplanes\n\n \n\nAD/CESSNA 185/31 Fuel Tank Filler Neck 9/79\n\nApplicability:  Model 185 with S/Nos. 18503684 to 03690, 03692, 03695 to 03700, 03702 to 03710,\n\n03713, 03715, 03716 and 03732.\n\n \n\nRequirement:  Action in accordance with Cessna SIL No. SE79-33. Compliance:   Within 100 hours time in service after 30 September 1979.\n\nBackground:  Certain 1979 model 185 aircraft fuel tanks may have been fitted with incorrect filler neck assemblies during manufacture. As the filler necks form fuel level indicators it is essential for flight planning purposes that a neck of correct length is fitted.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1646},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive addresses a specific manufacturing defect in a limited production run. The scope remains tightly focused on the original safety issue without expansion into broader operational requirements."},"complexity_factors":["Single, specific applicability clause (discrete serial number list)","Only one compliance action required (follow external manufacturer SIL)","No conditional exceptions, definitions, or nested legislative cross-references","Straightforward time-based compliance deadline"],"plain_english_summary":"This mandatory Airworthiness Directive orders owners of certain 1979 Cessna 185s to correct a factory-installed incorrect fuel tank filler neck that can give false fuel readings and risk fuel exhaustion. Affected aircraft must be repaired per Cessna Service Information Letter SE79-33 within 100 flight hours after 30 September 1979; until fixed they are unairworthy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-185-31-fuel-tank-filler-neck","history":"/api/acts/ad-cessna-185-31-fuel-tank-filler-neck/history","analysis":"/api/acts/ad-cessna-185-31-fuel-tank-filler-neck/analysis","conflicts":"/api/acts/ad-cessna-185-31-fuel-tank-filler-neck/conflicts","importantCases":"/api/acts/ad-cessna-185-31-fuel-tank-filler-neck/important-cases","documents":"/api/acts/ad-cessna-185-31-fuel-tank-filler-neck/documents"}}