{"id":"F2006B08352","name":"AD/CESSNA 400/69 - Wing Locker Fuel Tank Filler Cap - Rework","slug":"ad-cessna-400-69-wing-locker-fuel-tank-filler-cap-rework","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115759,"registerId":"commonwealth-F2006B08352-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 400/69 - Wing Locker Fuel Tank Filler Cap - Rework","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 400 Series Aeroplanes\n\n \n\nAD/CESSNA 400/69 Wing Locker Fuel Tank Filler Cap - Rework 11/79\n\nApplicability: Model 402B with S/Nos. 402B1201 to 402B1384 and Model 414 with S/Nos. 414- 0901 to 414-0965 fitted with wing locker auxiliary fuel tanks.\n\n \n\nDocument: Cessna SIL No. ME79-26.\n\n \n\nCompliance: Within 100 hours time in service after 30 November 1979.\n\n \n\nBackground: A hole is to be drilled in the wing locker fuel tank filler cap to improve venting and to eliminate the possibility of fuel siphoning.\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":1414},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original purpose: rectifying a specific fuel tank venting defect in identified Cessna aircraft. There is no evidence of scope creep; it mandates exactly one discrete safety modification without expanding into broader operational requirements or additional aircraft types."},"complexity_factors":["Single, unambiguous mechanical action required (drilling one hole)","Narrow applicability limited to specific aircraft models and serial number ranges","No nested conditional logic or exceptions beyond the initial applicability criteria","Simple compliance timeframe with clear trigger date","Only one external technical reference document cited"],"plain_english_summary":"Owners/operators of certain Cessna 402B and 414 aircraft fitted with wing‑locker auxiliary fuel tanks must have a mechanic drill a small vent hole in the tank filler cap. Required within 100 flight hours after Nov 30, 1979, the modification prevents pressure‑driven fuel siphoning that can cause leaks, fire hazards, and unexpected fuel loss."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-69-wing-locker-fuel-tank-filler-cap-rework","history":"/api/acts/ad-cessna-400-69-wing-locker-fuel-tank-filler-cap-rework/history","analysis":"/api/acts/ad-cessna-400-69-wing-locker-fuel-tank-filler-cap-rework/analysis","conflicts":"/api/acts/ad-cessna-400-69-wing-locker-fuel-tank-filler-cap-rework/conflicts","importantCases":"/api/acts/ad-cessna-400-69-wing-locker-fuel-tank-filler-cap-rework/important-cases","documents":"/api/acts/ad-cessna-400-69-wing-locker-fuel-tank-filler-cap-rework/documents"}}