{"id":"F2006B08281","name":"AD/CESSNA 340/4 Amdt 3 - Lower Wing Skin Rivets","slug":"ad-cessna-340-4-amdt-3-lower-wing-skin-rivets","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115601,"registerId":"commonwealth-F2006B08281-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 340/4 Amdt 3 - Lower Wing Skin Rivets","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 340/4\n\nAmdt 3\n\n\nLower Wing Skin Rivets 10/91\n\n \n\nApplicability: All model 340 with S/No 340-0208 to 340-0555 All model 340A with S/Nos 340A-0001 to 340A-0217.\n\n \n\nRequirement: Action in accordance with Cessna SL ME77-6.\n\n \n\nCompliance: At each inspection for Maintenance Release issue after 3 October 1991. The compliance date of the previous issue of this Directive was 1 January 1978.\n\n \n\nBackground: This Directive was raised in response to Cessna SL ME77-6, which introduced repair instructions for use in the event of loose or working lower wing skin/front spar attach rivets. This amendment is raised to ensure ongoing inspection; due to the difficulty in identifying replaced rivets, and likely deterioration of bonding.\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":1483},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment (Amdt 3) updates the compliance timing to ensure ongoing inspections but maintains the original safety scope of addressing lower wing skin rivet integrity in the specified Cessna 340 models. The extension from the original 1978 deadline to ongoing Maintenance Release inspections reflects operational necessity rather than scope expansion."},"complexity_factors":["Single external document reference (Cessna SL ME77-6)","Simple applicability based on aircraft serial number ranges","Single compliance trigger (Maintenance Release inspection)","No defined terms section or nested conditional logic"],"plain_english_summary":"This mandatory CASA safety directive requires owners/operators of specified Cessna 340/340A serial numbers to inspect and, if needed, repair loose or “working” rivets in the lower wing skin-to-front-spar attachment per Cessna Service Letter ME77-6. Inspections must be performed at every Maintenance Release check after 3 October 1991. It preserves structural integrity where rivets or bonding can deteriorate and previous repairs may be hard to verify."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-340-4-amdt-3-lower-wing-skin-rivets","history":"/api/acts/ad-cessna-340-4-amdt-3-lower-wing-skin-rivets/history","analysis":"/api/acts/ad-cessna-340-4-amdt-3-lower-wing-skin-rivets/analysis","conflicts":"/api/acts/ad-cessna-340-4-amdt-3-lower-wing-skin-rivets/conflicts","importantCases":"/api/acts/ad-cessna-340-4-amdt-3-lower-wing-skin-rivets/important-cases","documents":"/api/acts/ad-cessna-340-4-amdt-3-lower-wing-skin-rivets/documents"}}