{"id":"F2006B05956","name":"AD/PA-38/18 - Aileron Torque Tube Bearing - Inspection","slug":"ad-pa-38-18-aileron-torque-tube-bearing-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136117,"registerId":"commonwealth-F2006B05956-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-38/18 - Aileron Torque Tube Bearing - 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)  Piper PA-38 (Tomahawk) Series Aeroplanes\n\n \n\nAD/PA-38/18 Aileron Torque Tube Bearing - Inspection 9/81\n\nApplicability: All models PA-38-112 with S/Nos. 38-78A0001 to 38-80A0198, 38-81A0002 to 38- 81A0021, 38-81A0024 to 38-81A0026, 38-81A0030 to 38-81A0035.\n\n \n\nDocument: Piper SB No. 709.\n\n \n\nCompliance: Within 100 hours time in service after 30 September 1981.\n\n \n\nBackground: The aileron torque tube bearing P/N 452523 may have been installed improperly in the referenced aeroplanes.\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":1726},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original purpose: addressing a specific manufacturing defect in the aileron torque tube bearing of specific Piper PA-38 aircraft. It has not expanded beyond this narrow technical scope."},"complexity_factors":["Single, unambiguous compliance requirement","No defined terms or interpretation section","Limited applicability to specific aircraft serial numbers only","No cross-references to other legislative provisions","Straightforward deadline calculation (100 hours time in service)"],"plain_english_summary":"**What this is:** A mandatory safety notice (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) for owners of specific Piper Tomahawk aircraft.\n\n**Who it affects:** Owners and operators of Piper PA-38-112 Tomahawk aeroplanes with specific serial numbers (ranging from 38-78A0001 to 38-81A0035).\n\n**What it requires:** You must inspect the aileron torque tube bearing (part number 452523) — a component that helps control the aircraft's roll — within 100 hours of flying time after 30 September 1981.\n\n**Why it matters:** The bearing may have been installed incorrectly during manufacturing, which could affect the safety and control of the aircraft. The inspection ensures the bearing is installed properly and the aircraft is safe to fly.\n\n**How to comply:** Follow the inspection procedures detailed in Piper Service Bulletin No. 709."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-38-18-aileron-torque-tube-bearing-inspection","history":"/api/acts/ad-pa-38-18-aileron-torque-tube-bearing-inspection/history","analysis":"/api/acts/ad-pa-38-18-aileron-torque-tube-bearing-inspection/analysis","conflicts":"/api/acts/ad-pa-38-18-aileron-torque-tube-bearing-inspection/conflicts","importantCases":"/api/acts/ad-pa-38-18-aileron-torque-tube-bearing-inspection/important-cases","documents":"/api/acts/ad-pa-38-18-aileron-torque-tube-bearing-inspection/documents"}}