{"id":"F2006B08295","name":"AD/CESSNA 400/108 Amdt 1 - Bonded Wing","slug":"ad-cessna-400-108-amdt-1-bonded-wing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115624,"registerId":"commonwealth-F2006B08295-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 400/108 Amdt 1 - Bonded Wing","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\n# AD/CESSNA 400/108\n\nAmdt 1\n\nApplicability: All Cessna 402C.\n\n \n\nAll Cessna 404. All Cessna 414A. All Cessna 421C.\n\n# Bonded Wing 11/98\n\nRequirement: 1. Inspect for and repair corrosion, disbonds and deficient sealing between the wing skins and spars and/or ribs in accordance with Cessna Service Bulletin MEB95-11 Revision 1.\n\n \n\nNote: This AD requires use of Cessna repair designs, but does not preclude the submission of proposed repairs with technical justification for approval by CASA.\n\n \n\nCompliance: 1. Unless already accomplished, inspect before 2 July 1997 or 200 hours time in service after 2 January 1997, whichever occurs first. Thereafter, reinspect at the intervals defined in the Compliance section of Cessna Service Bulletin MEB95-11 Revision 1.\n\n \n\nThis Airworthiness Directive becomes effective on 8 October 1998. The original compliance period is unaffected.\n\n \n\nBackground: The presence of corrosion caused by moisture ingress will significantly reduce the fatigue life of the wing spar and will also have a detrimental effect on wing skin bonding.\n\n \n\nThis Amendment extends the compliance parameters to reflect the intervals specified in the Cessna Service Bulletin.\n\n \n\nThe original issue of this Airworthiness Directive became effective on 2 January 1997.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment is purely technical and clarifying. It does not expand the aircraft covered, add new inspection requirements, or alter the safety purpose. The change simply aligns the recurring inspection intervals with the referenced Cessna Service Bulletin rather than leaving ambiguity. The scope remains exactly as originally intended: ensuring wing structural integrity on specific Cessna twins through corrosion and disbond inspection."},"complexity_factors":["Single, clearly defined applicability (4 specific aircraft models)","One primary technical requirement referencing an external standard (Cessna Service Bulletin MEB95-11 Revision 1)","Simple compliance structure: initial deadline + recurring intervals","No defined terms section","No nested exceptions or conditional logic beyond the 'whichever occurs first' timing rule","Single amendment note explaining the change from original AD","Total length: approximately 250 words"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspections of Cessna 402C, 404, 414A and 421C wings for corrosion, disbonds and deficient sealing between the outer skin and internal spars/ribs, following Cessna MEB95-11 Rev 1. It applies to all operators in Australia because water ingress can seriously weaken wing structure and bonding.\n\nAmendment 1 (effective 8 Oct 1998) clarifies that recurring inspections must follow the intervals in the Cessna service bulletin; the original first-inspection deadline is unchanged."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment extends the compliance parameters to reflect the inspection and reinspection intervals specified in Cessna Service Bulletin MEB95‑11 Revision 1. The directive keeps the original initial compliance trigger unchanged but aligns ongoing inspection intervals with the service bulletin; amendment effective 8 October 1998 (original AD effective 2 January 1997)."},"complexity_factors":["Cross-reference to an external document (Cessna Service Bulletin MEB95‑11 Rev 1) for inspection procedures, repair designs and repeat intervals creates dependency on that bulletin for actionable detail (Requirement; Compliance).","Multiple aircraft models listed (Cessna 402C, 404, 414A, 421C) increases the operator pool affected and the variety of fleet maintenance plans (Applicability).","Time-based compliance trigger: initial inspection due before 2 July 1997 or 200 hours after 2 January 1997, whichever first, then recurring intervals as per the service bulletin — potential for confusion about timelines during amendment transition (Compliance).","Mandated use of Cessna repair designs but allowance for CASA-approved alternatives introduces regulatory discretion and an approval burden on operators proposing different repairs (Note).","Economic and operational burden falls to owners/operators who must inspect and repair to remain airworthy; costs and downtime are not specified (Requirement; Compliance).","Safety rationale is explicit (moisture ingress reduces fatigue life and bonding), which anchors the directive but requires technical inspection and possible structural repair work (Background).","Amendment changes compliance parameters to align with the service bulletin while stating the original compliance period is unaffected — creates a need to reconcile original AD timelines with amended intervals (This Amendment; original AD statement)."],"plain_english_summary":"Requires owners/operators of listed Cessna models (402C, 404, 414A, 421C) to inspect and repair corrosion, disbonds and deficient sealing between wing skins and spars/ribs in line with Cessna Service Bulletin MEB95‑11 Rev 1. Inspections must be done by specified early dates or hours and then at intervals set in the service bulletin; repairs should use Cessna designs unless an alternative is approved by CASA. It matters because moisture ingress can shorten wing‑spar fatigue life and weaken skin bonding."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-108-amdt-1-bonded-wing","history":"/api/acts/ad-cessna-400-108-amdt-1-bonded-wing/history","analysis":"/api/acts/ad-cessna-400-108-amdt-1-bonded-wing/analysis","conflicts":"/api/acts/ad-cessna-400-108-amdt-1-bonded-wing/conflicts","importantCases":"/api/acts/ad-cessna-400-108-amdt-1-bonded-wing/important-cases","documents":"/api/acts/ad-cessna-400-108-amdt-1-bonded-wing/documents"}}