{"id":"F2006B08266","name":"AD/CESSNA 340/20 - Wing Locker Fuel Tank Filler Cap - Rework","slug":"ad-cessna-340-20-wing-locker-fuel-tank-filler-cap-rework","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115574,"registerId":"commonwealth-F2006B08266-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 340/20 - Wing Locker Fuel Tank Filler Cap -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 340 Series Aeroplanes\n\n \n\nAD/CESSNA 340/20 Wing Locker Fuel Tank Filler Cap - Rework 11/79\n\nApplicability: Model 340A with S/Nos. 340A0201 to 340A0753, fitted with wing lock 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":2115},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains tightly scoped to its original purpose: addressing a specific fuel system defect (siphoning risk) on a defined subset of aircraft. No expansion into broader operational or maintenance requirements."},"complexity_factors":["Single, specific mechanical action (drilling a hole)","Narrow applicability limited to specific aircraft serial number range","External cross-reference to manufacturer document (Cessna SIL ME79-26)","Time-based compliance metric (100 hours 'time in service')"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — a compulsory safety order issued by the Civil Aviation Safety Authority requiring specific aircraft modifications.\n\n**What it requires:** Owners and operators must drill a hole in the fuel filler caps of their wing locker auxiliary tanks to improve ventilation. This simple modification prevents fuel from siphoning out during flight.\n\n**Who it affects:** Only Cessna Model 340A aircraft with serial numbers between 340A0201 and 340A0753 that are fitted with wing locker auxiliary fuel tanks.\n\n**When you must comply:** Within 100 hours of flight time after 30 November 1979.\n\n**How to comply:** Follow the technical instructions in **Cessna Service Information Letter (SIL) No. ME79-26**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-340-20-wing-locker-fuel-tank-filler-cap-rework","history":"/api/acts/ad-cessna-340-20-wing-locker-fuel-tank-filler-cap-rework/history","analysis":"/api/acts/ad-cessna-340-20-wing-locker-fuel-tank-filler-cap-rework/analysis","conflicts":"/api/acts/ad-cessna-340-20-wing-locker-fuel-tank-filler-cap-rework/conflicts","importantCases":"/api/acts/ad-cessna-340-20-wing-locker-fuel-tank-filler-cap-rework/important-cases","documents":"/api/acts/ad-cessna-340-20-wing-locker-fuel-tank-filler-cap-rework/documents"}}