{"id":"F2006B07159","name":"AD/SWSA226/12 - Rudder Bellcranks - Inspection","slug":"ad-swsa226-12-rudder-bellcranks-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49032,"registerId":"commonwealth-F2006B07159-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/12 - Rudder Bellcranks - 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/SWSA226/12 Rudder Bellcranks - Inspection 9/73\n\nApplicability: All model SA226T with S/Nos. T-201 to T-234. Document:  Swearingen SB 27-20-3040.\n\nCompliance: Within 10 hours after 27 August 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 \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1965},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original, highly specific scope targeting only the rudder bellcrank inspection for a defined subset of SA226T aircraft."},"complexity_factors":["Single, unambiguous mandate with no conditional branches","No defined terms or interpretation sections","Specific, narrow applicability limited to aircraft serial numbers","Direct, simple incorporation of external technical standard (Service Bulletin)","Clear-cut compliance deadline (10 hours time-in-service)"],"plain_english_summary":"This **Airworthiness Directive (AD)** is a compulsory safety notice issued by the Civil Aviation Safety Authority (CASA) requiring a mechanical check on specific aircraft.\n\n**What it requires:**\nOperators must inspect the **rudder bellcranks** — the pivot joints that transfer movement from the pilot's foot pedals to the rudder on the tail. The check must be carried out exactly as described in **Swearingen Service Bulletin 27-20-3040**.\n\n**Who is affected:**\nOnly owners of **Fairchild Swearingen SA226T** aircraft with serial numbers **T-201 through T-234**.\n\n**Why it matters:**\nFaulty bellcranks can cause the pilot to lose directional control. The directive imposes a strict deadline: the inspection must be done within **10 hours of flight time after 27 August 1973**.\n\nIn short: If you operate one of these specific aircraft, you must complete this inspection immediately to remain airworthy and comply with the law."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-12-rudder-bellcranks-inspection","history":"/api/acts/ad-swsa226-12-rudder-bellcranks-inspection/history","analysis":"/api/acts/ad-swsa226-12-rudder-bellcranks-inspection/analysis","conflicts":"/api/acts/ad-swsa226-12-rudder-bellcranks-inspection/conflicts","importantCases":"/api/acts/ad-swsa226-12-rudder-bellcranks-inspection/important-cases","documents":"/api/acts/ad-swsa226-12-rudder-bellcranks-inspection/documents"}}