{"id":"F2006B08183","name":"AD/CESSNA 310/56 Amdt 1 - Main Landing Gear Wheel Bay Wing Rib and Wing Skin","slug":"ad-cessna-310-56-amdt-1-main-landing-gear-wheel-bay-wing-rib-and-wing-skin","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115390,"registerId":"commonwealth-F2006B08183-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 310/56 Amdt 1 - Main Landing Gear Wheel Bay Wing Rib and Wing Skin","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nCessna 310 Series Aeroplanes\n\nAD/CESSNA 310/56\n\nAmdt 1\n\n  \n\nMain Landing Gear Wheel Bay Wing Rib and Wing Skin\n\n  \n10/95\n\nApplicability: Cessna 310 aircraft, all models.\n\nRequirement: Inspect the main landing gear side brace upper support attach bolts for correct torque.\n\nClean and do a close visual inspection of the main landing gear wheel well ribs in accordance with Cessna Service Letter (SL) ME76-2.\n\nVisually inspect the wing upper surface skin in the overwing baggage locker for cracking. Pay particular attention to the inboard side of the locker.\n\nCompliance: Initially inspect before 100 hours time in service after 20 July 1995 or before 25 hours time in service after 14 September 1995, whichever occurs later.\n\nRe-inspect at intervals not to exceed 100 hours time in service.\n\nInstallation of Cessna Service Kit SK414-8E or repair to a scheme acceptable to the Authority cancels Requirement of this Directive.\n\nThis Amendment is effective from 14 September 1995.\n\nBackground: There have been five reports of cracking of main landing gear wheel well ribs on Australian registered aircraft. In a number of cases cracks have also been reported in the wing upper surface skin in the baggage locker. Extensive cracking of the wing ribs could result in collapse of the main landing gear.\n\nThis amendment clarifies that the Directive is applicable to all model 310 aircraft and adds repairs acceptable to the Authority as suitable terminating action.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: addressing cracking in main landing gear wheel well ribs and wing skin on Cessna 310 aircraft. The changes from the original directive are minor clarifications (confirming applicability to all models) and additions (permitting approved repairs as terminating action) that stay within the original safety scope. No mission creep or expansion into unrelated aircraft systems."},"complexity_factors":["Single, specific aircraft type (Cessna 310 series) with narrow technical scope","Only 3 distinct inspection requirements with clear, sequential steps","Simple compliance timeline with two alternative deadlines and a single re-inspection interval","One clear terminating condition (installation of specific service kit or approved repair)","No defined terms section, no cross-references to other legislation beyond the enabling regulations","Plain language background section explaining the safety rationale","Total length: approximately 200 words"],"plain_english_summary":"Owners, operators and maintenance engineers of all Cessna 310s in Australia must inspect key wing and main-gear areas for cracks and secure landing-gear side-brace bolts, following reports of cracking that can lead to main-gear collapse on landing. Initial and recurring inspections are mandatory within specified flight-hour limits; installing Cessna service kit SK414-8E or an approved CASA repair removes the recurring-inspection requirement."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment clarifies that the AD applies to all Cessna 310 models (broader applicability) and adds that either installation of Service Kit SK414‑8E or a repair scheme acceptable to the Authority will cancel the inspection requirement (new terminating action). (Background; Applicability; Installation)."},"complexity_factors":["Recurring inspection requirement with a specific interval (100 hours) creates ongoing operational/maintenance burden (Compliance).","Dual initial compliance windows (dates and hours) add scheduling complexity for operators with varied flight hours (Compliance).","Multiple inspection types: torque check of attach bolts and close visual inspections of ribs and wing skin per manufacturer Service Letter (Requirement).","Termination options include installing a specific Service Kit (SK414‑8E) or completing a repair scheme 'acceptable to the Authority', introducing regulatory discretion (Installation).","Applicability extended to all Cessna 310 models, broadening the affected fleet and potential aggregate cost (Applicability / Background).","Safety consequence (possible main landing gear collapse) makes enforcement and timely compliance operationally critical (Background)."],"plain_english_summary":"This airworthiness directive requires owners/operators of Cessna 310 aeroplanes to inspect main landing gear side‑brace attach bolts for correct torque and to visually inspect wheel‑bay ribs and the wing upper skin in the overwing baggage locker for cracking. Inspections must be done soon after the amendment and repeated at 100‑hour intervals; installing Service Kit SK414‑8E or an Authority‑approved repair ends the inspection requirement. The measure responds to reported rib and skin cracking that could lead to gear collapse; owners pay inspection and repair costs and CASA decides acceptable repairs."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-310-56-amdt-1-main-landing-gear-wheel-bay-wing-rib-and-wing-skin","history":"/api/acts/ad-cessna-310-56-amdt-1-main-landing-gear-wheel-bay-wing-rib-and-wing-skin/history","analysis":"/api/acts/ad-cessna-310-56-amdt-1-main-landing-gear-wheel-bay-wing-rib-and-wing-skin/analysis","conflicts":"/api/acts/ad-cessna-310-56-amdt-1-main-landing-gear-wheel-bay-wing-rib-and-wing-skin/conflicts","importantCases":"/api/acts/ad-cessna-310-56-amdt-1-main-landing-gear-wheel-bay-wing-rib-and-wing-skin/important-cases","documents":"/api/acts/ad-cessna-310-56-amdt-1-main-landing-gear-wheel-bay-wing-rib-and-wing-skin/documents"}}