{"id":"F2006B07179","name":"AD/SWSA226/39 - Main Landing Gear Door Actuating Mechanism - Modification","slug":"ad-swsa226-39-main-landing-gear-door-actuating-mechanism-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49114,"registerId":"commonwealth-F2006B07179-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/39 - Main Landing Gear Door Actuating Mechanism - 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/SWSA226/39 Main Landing Gear Door Actuating\n\nMechanism - Modification\n\n\n1/82\n\n \n\nApplicability: All model/s SA-227 with S/Nos. referenced in Fairchild Swearingen SB SBA32-003 or with S/Nos. referenced in subsequent issues or revisions of that SB.\n\n \n\nDocument: Fairchild Swearingen Alert SB SBA 32-003.\n\n \n\nCompliance: Unless already accomplished, within 10 hours time in service - after 31 Jan 1982. Background:              Modification is required to ensure proper operation of the MLG door mechanism.\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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1514},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope: a targeted safety modification for a specific aircraft type's landing gear system. No expansion of scope is evident."},"complexity_factors":["Single, specific technical requirement","Reference to external technical standard (Service Bulletin SBA 32-003) for implementation details","Simple conditional compliance clause ('unless already accomplished')","No defined terms or nested legislative cross-references"],"plain_english_summary":"**What this is:** A mandatory safety directive (Airworthiness Directive) issued by the Civil Aviation Safety Authority requiring a specific mechanical fix for certain aircraft.\n\n**Who it affects:** Owners and operators of Fairchild Swearingen SA-227 model aeroplanes with serial numbers listed in the manufacturer's Service Bulletin SBA 32-003.\n\n**What you must do:** Modify the main landing gear door actuating mechanism according to the manufacturer's Alert Service Bulletin SBA 32-003. This work must be completed within 10 hours of flight time after 31 January 1982, unless the modification has already been done.\n\n**Why it matters:** The change ensures the main landing gear doors open and close properly, preventing potential landing gear malfunctions that could compromise flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-39-main-landing-gear-door-actuating-mechanism-modification","history":"/api/acts/ad-swsa226-39-main-landing-gear-door-actuating-mechanism-modification/history","analysis":"/api/acts/ad-swsa226-39-main-landing-gear-door-actuating-mechanism-modification/analysis","conflicts":"/api/acts/ad-swsa226-39-main-landing-gear-door-actuating-mechanism-modification/conflicts","importantCases":"/api/acts/ad-swsa226-39-main-landing-gear-door-actuating-mechanism-modification/important-cases","documents":"/api/acts/ad-swsa226-39-main-landing-gear-door-actuating-mechanism-modification/documents"}}