{"id":"F2006B07232","name":"AD/SWSA226/9 - Main Landing Gear Uplock Roller - Inspection and Modification","slug":"ad-swsa226-9-main-landing-gear-uplock-roller-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49066,"registerId":"commonwealth-F2006B07232-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/9 - Main Landing Gear Uplock Roller - Inspection and Modification","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)  Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes\n\n \n\nAD/SWSA226/9  Main Landing Gear Uplock Roller - Inspection and Modification\n\nApplicability: All models with S/Nos. T201 to T220. Document:  Swearingen SB 30-10-3028.\n\nCompliance: Within 100 hours time in service after 28 February 1973.\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\n \n\n \n\n \n\n\n2/73\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1512},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope from 1973, targeting only the specific mechanical defect in the main landing gear uplock roller for the identified aircraft serial numbers. There is no evidence of scope expansion beyond the original safety intent."},"complexity_factors":["Single, clear applicability criterion (specific serial number range)","One unambiguous action required (inspect and modify per referenced service bulletin)","Simple compliance deadline (100 hours time-in-service after fixed date)","No exceptions, exemptions, or conditional logic","Minimal cross-referencing (single service bulletin citation)"],"plain_english_summary":"**What this does**\n\nThis is a mandatory safety order (called an Airworthiness Directive) that requires owners and operators of specific aircraft to inspect and fix a mechanical part on the main landing gear.\n\n**Who it affects**\n\nOwners and operators of Fairchild (Swearingen) SA226 and SA227 series aeroplanes with serial numbers T201 through T220.\n\n**What must be done**\n\nYou must inspect and modify the **main landing gear uplock roller** (a component that helps lock the landing gear in the up position during flight) within 100 hours of flight time after 28 February 1973. The work must follow the manufacturer's instructions in **Service Bulletin 30-10-3028** (a technical instruction manual from the plane's maker).\n\n**Why it matters**\n\nThis prevents potential failures in the landing gear retraction system, ensuring the aircraft can safely raise and secure its wheels after takeoff."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-9-main-landing-gear-uplock-roller-inspection-and-modification","history":"/api/acts/ad-swsa226-9-main-landing-gear-uplock-roller-inspection-and-modification/history","analysis":"/api/acts/ad-swsa226-9-main-landing-gear-uplock-roller-inspection-and-modification/analysis","conflicts":"/api/acts/ad-swsa226-9-main-landing-gear-uplock-roller-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-swsa226-9-main-landing-gear-uplock-roller-inspection-and-modification/important-cases","documents":"/api/acts/ad-swsa226-9-main-landing-gear-uplock-roller-inspection-and-modification/documents"}}