{"id":"F2005L00102","name":"AD/AL 250/82 - Hydromechanical Unit Power Lever Angle Potentiometer - CANCELLED","slug":"ad-al-250-82-hydromechanical-unit-power-lever-angle-potentiometer-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":33497,"registerId":"commonwealth-F2005L00102-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AL 250/82 - Hydromechanical Unit Power Lever Angle Potentiometer - CANCELLED","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 20.2\ntitle: AIRCRAFT\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\n \n\nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive AD/AL 250/82.\n\n### Allison Turbine Engines - 250 Series\n\n| AD/AL 250/82 | Hydromechanical Unit Power  Lever Angle Potentiometer | 2/2005 |\n| --- | --- | --- |\n\n\n \n\n| Requirement: | CANCELLED. |\n| --- | --- |\n| Background: | Superseded by AD/AL 250/84. |\n\n\n![](image.001.png)\n\nJames Coyne  Delegate of the Civil Aviation Safety Authority\n\n23 December 2004\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\nThe above AD is notified in the Commonwealth of Australia Gazette on 26 January 2005.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1616},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs administrative housekeeping by cancelling a superseded directive. It does not expand or alter the regulatory scope, but rather removes obsolete requirements while maintaining the broader safety framework for Allison 250 engines."},"complexity_factors":["Single operational provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Single cross-reference to the replacement directive (AD/AL 250/84)"],"plain_english_summary":"The Civil Aviation Safety Authority (CASA) has cancelled an old aircraft maintenance rule.\n\n**What this does:**\nThis instrument formally revokes Airworthiness Directive AD/AL 250/82, which previously set safety requirements for the **hydromechanical unit power lever angle potentiometer** (a sensor that measures throttle position) on Allison 250 series turbine engines.\n\n**Why it matters:**\nThe old rule has been replaced by a newer directive (AD/AL 250/84). This cancellation removes the outdated requirement from the rulebook, ensuring aircraft mechanics and operators follow only the current safety standards. If you operate or maintain aircraft with these engines, you must now comply with the replacement directive instead of this cancelled one."}},"importantCases":[],"_links":{"self":"/api/acts/ad-al-250-82-hydromechanical-unit-power-lever-angle-potentiometer-cancelled","history":"/api/acts/ad-al-250-82-hydromechanical-unit-power-lever-angle-potentiometer-cancelled/history","analysis":"/api/acts/ad-al-250-82-hydromechanical-unit-power-lever-angle-potentiometer-cancelled/analysis","conflicts":"/api/acts/ad-al-250-82-hydromechanical-unit-power-lever-angle-potentiometer-cancelled/conflicts","importantCases":"/api/acts/ad-al-250-82-hydromechanical-unit-power-lever-angle-potentiometer-cancelled/important-cases","documents":"/api/acts/ad-al-250-82-hydromechanical-unit-power-lever-angle-potentiometer-cancelled/documents"}}