{"id":"F2006B02247","name":"AD/AL 250/30 - Fuel System - Fuel Pump to Control and Fuel Control to Pump By-Pass Tube Clamps - Replacement","slug":"ad-al-250-30-fuel-system-fuel-pump-to-control-and-fuel-control-to-pump-by-pass-tube-clamps-replaceme","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41477,"registerId":"commonwealth-F2006B02247-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AL 250/30 - Fuel System - Fuel Pump to Control and Fuel Control to Pump By-Pass Tube Clamps - Replacement","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 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Allison Turbine Engines - 250 Series\n\n \n\nAD/AL 250/30 Fuel System - Fuel Pump to Control and\n\nFuel Control to Pump By-Pass Tube Clamps - Replacement\n\n\n5/78\n\n \n\nApplicability: C18 models - all. B17 models - all. C20 models - prior to S/N CAE 823105. C20B models - prior to S/N CAE 830187 B17B models - prior to S/N CAE 880176.\n\n \n\nDocument: 1. Allison 250-C20/C20B CEB-1042; or\n\n \n\n2.         Allison 250-C18 CEB-182; or\n\n \n\n3.         Allison 250-B17/B17B TP CEB-1059.\n\n \n\nCompliance: As detailed in the requirement document.\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":1678},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument retains its original narrow technical scope as a targeted safety directive addressing specific fuel system clamp replacements on designated turbine engine models. There is no evidence of scope expansion beyond the original airworthiness safety purpose."},"complexity_factors":["Applicability determined by specific engine model and serial number cut-offs","Compliance achieved by reference to external technical service bulletins rather than inline procedural steps","Limited to a single mechanical component replacement task"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires replacement of specific fuel‑tube clamps on certain Allison 250‑series turbine engines to eliminate looseness or failure that can cause fuel leaks and engine fire risk. \n\nIt affects owners/operators of Allison 250 C18, B17 and specified C20/C20B/B17B serial‑number engines and must be done per the applicable Allison service bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-al-250-30-fuel-system-fuel-pump-to-control-and-fuel-control-to-pump-by-pass-tube-clamps-replaceme","history":"/api/acts/ad-al-250-30-fuel-system-fuel-pump-to-control-and-fuel-control-to-pump-by-pass-tube-clamps-replaceme/history","analysis":"/api/acts/ad-al-250-30-fuel-system-fuel-pump-to-control-and-fuel-control-to-pump-by-pass-tube-clamps-replaceme/analysis","conflicts":"/api/acts/ad-al-250-30-fuel-system-fuel-pump-to-control-and-fuel-control-to-pump-by-pass-tube-clamps-replaceme/conflicts","importantCases":"/api/acts/ad-al-250-30-fuel-system-fuel-pump-to-control-and-fuel-control-to-pump-by-pass-tube-clamps-replaceme/important-cases","documents":"/api/acts/ad-al-250-30-fuel-system-fuel-pump-to-control-and-fuel-control-to-pump-by-pass-tube-clamps-replaceme/documents"}}