{"id":"F2006B07196","name":"AD/SWSA226/55 - Landing Gear Control Assembly","slug":"ad-swsa226-55-landing-gear-control-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48902,"registerId":"commonwealth-F2006B07196-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/55 - Landing Gear Control Assembly","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)  \nFairchild (Swearingen) SA226 and SA227 Series Aeroplanes\n\nAD/SWSA226/55 Landing Gear Control Assembly 10/87 DM\n\nApplicability: Model SA-226-T all S/No Model SA-226-T(B) all except S/No. T-276, and S/Nos. T- 283 through T-297. Model SA-226-AT all except S/No. AT-062E through H AT-069. Model SA-226-TC all except S/No. TC-247 through TC-279.\n\nRequirement: 1. Modify the landing gear selector lever in accordance with Fairchild Aircraft Corporation Service Bulletin No. 226-32-048.\n\n2. Visually inspect the sides and end of the centre pedestal for installation of brackets, holders, or any sort of provision for the storage of maps, charts, and approach charts, and remove any such devices for which approval cannot be demonstrated.\n\nNote: FAA AD 87-13-11 Amendment 39-5668 refers.\n\nCompliance: Prior to 1 December 1987.\n\nBackground: FAA investigations into accidents involving inadvertent landing gear actuation revealed that the landing gear selector lever detents are subject to wear, & once worn, the selector lever can easily be displaced from the selected position. The FAA found that storage provisions to the sides of the centre pedestal are not part of the approved Fairchild type design, and when used for storage of charts, maps, etc, block the clear view of pedestal controls and switches, and can also cause the inadvertent actuation of various controls and switches on the pedestal.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive reproduces the FAA finding and mandates the specified modification and removal for the listed models/serial numbers. It does not expand or narrow the stated applicability or add extra measures beyond the two requirements set out in the instrument."},"complexity_factors":["Clear, limited scope: only two actions required (Requirement 1: modify selector lever; Requirement 2: inspect and remove storage fittings).","Applicability restricted by specific models and serial numbers, which simplifies scope but requires careful serial-number checks.","Depends on an external technical document (Fairchild Service Bulletin No. 226-32-048) for the modification procedure — operators must obtain and follow that SB.","Compliance deadline (Prior to 1 December 1987) creates a time-pressure/administrative obligation on operators (Compliance).","Inspection language includes subjective phrasing ('any sort of provision for the storage') that can create judgment calls for inspectors about what to remove.","Burden of proof rests on operators to 'demonstrate' approval for any devices they wish to keep, imposing documentary compliance costs.","Technical work requires qualified maintenance personnel and parts availability, adding operational and cost considerations."],"plain_english_summary":"This airworthiness directive requires operators of specified Fairchild (Swearingen) SA226/SA227 aeroplanes to modify the landing-gear selector lever per Fairchild Service Bulletin No. 226‑32‑048 and to remove any unapproved map/chart storage fittings from the centre pedestal. Compliance (inspection and modification) must be completed by 1 December 1987. Owners/operators of the listed serial-numbered aircraft must arrange and pay for the work and demonstrate approval for any retained devices."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing specific mechanical and ergonomic hazards in specific aircraft. It has not expanded beyond its original purpose of mandating landing gear lever modifications and cockpit clutter removal for the affected Fairchild aircraft models."},"complexity_factors":["Single, specific technical requirement with clear manufacturer reference (Service Bulletin 226-32-048)","Limited applicability — only 4 specific aircraft models with explicit serial number exclusions","Two discrete compliance actions (mechanical modification + visual inspection/removal)","No nested conditional logic or cross-references to other legislation beyond a single note referencing the corresponding FAA AD","Fixed, absolute compliance deadline (no conditional or phased compliance)","Background section provides clear rationale in plain language"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires owners/operators of certain Fairchild (Swearingen) SA226/SA227 series aircraft to modify worn landing-gear selector lever detents (per manufacturer service bulletin) and remove any unapproved map/chart brackets or holders from the centre pedestal. \n\nThe changes address accidental gear actuation and obstructed controls linked to prior accidents. Compliance is legally required and was due by 1 December 1987 for the applicable serial-numbered aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-55-landing-gear-control-assembly","history":"/api/acts/ad-swsa226-55-landing-gear-control-assembly/history","analysis":"/api/acts/ad-swsa226-55-landing-gear-control-assembly/analysis","conflicts":"/api/acts/ad-swsa226-55-landing-gear-control-assembly/conflicts","importantCases":"/api/acts/ad-swsa226-55-landing-gear-control-assembly/important-cases","documents":"/api/acts/ad-swsa226-55-landing-gear-control-assembly/documents"}}