{"id":"F2006B07166","name":"AD/SWSA226/23 - Fuel and Hyraulic Lines Inspection","slug":"ad-swsa226-23-fuel-and-hyraulic-lines-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49053,"registerId":"commonwealth-F2006B07166-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/23 - Fuel and Hyraulic Lines 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/SWSA226/23 Fuel and Hyraulic Lines Inspection 11/76\n\nApplicability: All SA-226 series not incorporating Swearingen SB No. 54-003. Document:  Swearingen SB 54-002.\n\nCompliance: Within 50 hours time in service after 28 October 1976 and thereafter at intervals not exceeding 50 hours time in service.\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","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific mechanical inspection for a specific aircraft type. It has not expanded beyond its original purpose of addressing fuel and hydraulic line integrity in SA-226 aircraft."},"complexity_factors":["Extremely short document — only 4 substantive lines of regulatory text","Single applicability criterion (aircraft series minus one specific modification)","No defined terms section — relies on standard aviation terminology","Simple compliance structure: one-time initial inspection plus recurring interval","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","No conditional logic, exceptions, or nested provisions"],"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) SA-226 series aircraft to inspect their **fuel and hydraulic lines** for defects.\n\n**Who it affects:**\n- Owners and operators of SA-226 series aircraft\n- Specifically those that **have NOT** been modified according to Swearingen Service Bulletin No. 54-003\n\n**What must be done:**\n- **First inspection:** Within 50 hours of flying time after 28 October 1976\n- **Repeat inspections:** Every 50 hours of flying time thereafter\n\n**Why it matters:**\nFuel and hydraulic line failures can cause fires or loss of aircraft control. This directive forces operators to catch problems before they cause accidents. The repetitive 50-hour interval suggests CASA considered this a critical, ongoing safety risk requiring frequent monitoring rather than a one-off fix.\n\n**Key document reference:**\nOperators must follow the procedures in **Swearingen Service Bulletin 54-002** (the manufacturer's official repair/inspection instructions)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive, as written, applies to all SA-226 series aircraft that have not incorporated Swearingen SB No. 54-003 and requires inspections per Swearingen SB 54-002 within 50 hours after 28 October 1976 and every 50 hours thereafter. There is no textual indication in the supplied instrument that the scope of affected aircraft or the required inspection interval was altered from that stated provision. (Applicability; Document; Compliance)"},"complexity_factors":["Narrow applicability limited to SA-226 series not incorporating SB 54-003 (low scope breadth). (Applicability)","Single clear compliance interval (50 hours) and fixed initial compliance date, reducing scheduling ambiguity. (Compliance)","Dependence on an external service bulletin (Swearingen SB 54-002) for procedural detail increases procedural dependency but does not add textual complexity to the AD itself. (Document)","Administrative task of verifying whether SB 54-003 has been incorporated introduces some record-check complexity. (Applicability)","Operational impact (frequent inspections) increases practical complexity for operators’ maintenance scheduling despite simple regulatory wording. (Compliance)"],"plain_english_summary":"This directive requires affected Fairchild (Swearingen) SA-226 aircraft that have not incorporated Swearingen SB 54-003 to undergo recurring inspections of fuel and hydraulic lines using Swearingen SB 54-002, starting within 50 flight hours after 28 Oct 1976 and every 50 hours thereafter. It affects owners/operators and maintenance organisations, imposes inspection, repair and downtime costs on owners, and creates an incentive to adopt SB 54-003 to avoid the recurring burden."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-23-fuel-and-hyraulic-lines-inspection","history":"/api/acts/ad-swsa226-23-fuel-and-hyraulic-lines-inspection/history","analysis":"/api/acts/ad-swsa226-23-fuel-and-hyraulic-lines-inspection/analysis","conflicts":"/api/acts/ad-swsa226-23-fuel-and-hyraulic-lines-inspection/conflicts","importantCases":"/api/acts/ad-swsa226-23-fuel-and-hyraulic-lines-inspection/important-cases","documents":"/api/acts/ad-swsa226-23-fuel-and-hyraulic-lines-inspection/documents"}}