{"id":"F2006B07184","name":"AD/SWSA226/44 - Main Landing Gear Door System - Inspection","slug":"ad-swsa226-44-main-landing-gear-door-system-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114952,"registerId":"commonwealth-F2006B07184-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/44 - Main Landing Gear Door System - Inspection","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/SWSA226/44 Main Landing Gear Door System - Inspection 1/83\n\nApplicability: Models SA226-T(B), S/N T(B)276, T(B)292 thru T(B) 397. SA226-T, S/N T201 thru T275 and T277 thru T291. SA226-AT, S/N AT001 thru AT074. SA226-TC, S/N TC201 thru TC396.\n\n \n\nDocument: Fairchild Swearingen SB No. 32-026.\n\n \n\nNote: FAA AD 82-23-06 Amendment 39-4493 refers.\n\n \n\nCompliance: Unless already accomplished, within 100 hours time in service after 31 January, 1983.\n\n \n\nBackground: Shifting of the main landing gear doors has occurred which resulted in the landing gear locking in the up position.\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":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive retains a narrow, targeted scope consistent with the stated safety issue: inspection of main landing gear door systems on the listed SA226 serial-numbered aircraft. It requires the inspection per the manufacturer’s service bulletin within a fixed timeframe to address reported door shifting that could lock the landing gear up (Applicability, Document, Compliance, Background)."},"complexity_factors":["Narrow applicability limited to specific aircraft models and serial number ranges (Applicability)","Single required action (inspection) referenced to an external manufacturer service bulletin (Document)","Fixed, short compliance window (100 hours time in service after 31 January 1983) (Compliance)","Technical execution depends on maintenance personnel and access to the service bulletin (Document)","Safety-critical operational consequence motivating the directive (Background)"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Fairchild (Swearingen) SA226/SA227 serial-numbered aeroplanes to inspect the main landing‑gear door system per Fairchild Swearingen Service Bulletin No. 32‑026, to be completed within 100 hours TIS after 31 January 1983. It responds to incidents of gear doors shifting and locking the gear up, so affected operators (and their maintenance organisations) must perform the inspection and any repairs at their own cost, accepting associated downtime."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating a one-time inspection for landing gear door alignment issues."},"complexity_factors":["Very short document (approximately 200 words)","Only 4 defined applicability categories (specific aircraft models and serial number ranges)","Single compliance requirement with clear deadline","No cross-references to other legislation sections (only references to manufacturer bulletin and FAA directive for background)","No conditional logic or nested exceptions","Straightforward imperative language ('Unless already accomplished, within 100 hours...')"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of certain Fairchild Swearingen SA226 and SA227 series aeroplanes to inspect their **main landing gear door systems**. The inspection must check for a problem where the landing gear doors can shift out of position, which has previously caused landing gear to get stuck in the 'up' position — a serious safety risk during landing.\n\n**Who it affects:**\nOwners and operators of specific Fairchild Swearingen aircraft models and serial numbers:\n- SA226-T(B) — serial numbers T(B)276, and T(B)292 through T(B)397\n- SA226-T — serial numbers T201 through T275, and T277 through T291  \n- SA226-AT — serial numbers AT001 through AT074\n- SA226-TC — serial numbers TC201 through TC396\n\n**When compliance is required:**\nWithin 100 hours of flight time after 31 January 1983, unless the inspection was already done.\n\n**Why it matters:**\nLanding gear that won't come down is a life-threatening emergency. This directive forces a proactive inspection to prevent accidents before they happen. It references a manufacturer service bulletin (SB No. 32-026) and a corresponding US Federal Aviation Administration directive (FAA AD 82-23-06), showing this was a known international safety issue."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-44-main-landing-gear-door-system-inspection","history":"/api/acts/ad-swsa226-44-main-landing-gear-door-system-inspection/history","analysis":"/api/acts/ad-swsa226-44-main-landing-gear-door-system-inspection/analysis","conflicts":"/api/acts/ad-swsa226-44-main-landing-gear-door-system-inspection/conflicts","importantCases":"/api/acts/ad-swsa226-44-main-landing-gear-door-system-inspection/important-cases","documents":"/api/acts/ad-swsa226-44-main-landing-gear-door-system-inspection/documents"}}