{"id":"F2006B04543","name":"AD/BELL 206/96 - Fuel Supply Tube Assembly","slug":"ad-bell-206-96-fuel-supply-tube-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114267,"registerId":"commonwealth-F2006B04543-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/96 - Fuel Supply Tube Assembly","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\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\n \n\nAD/BELL 206/96 Fuel Supply Tube Assembly 3/84\n\nApplicability: Model 206 B series, serial number 3567 through 3784. Document:  Alert Service Bulletin 206-84-22.\n\nCompliance: Before 30th September 1984 unless already accomplished.\n\n \n\nBackground: To preclude the possibility of corrosion penetrating the tube, causing fuel or fuel fumes entering the cabin. The manufacturer has introduced a stainless steel tube to replace the existing aluminium tube.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2281},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The AD maintains its original narrow scope: a targeted safety fix for a specific corrosion defect in a defined fleet of helicopters. It has not expanded to cover other components or aircraft types."},"complexity_factors":["Single operative requirement (one physical modification)","Narrow applicability limited to one helicopter model and specific serial number range","Document length under 150 words","No conditional exceptions or nested qualifying clauses","Only one external reference (manufacturer service bulletin)"],"plain_english_summary":"**What this does:**\nThis Airworthiness Directive (AD) mandates a safety modification for specific Bell helicopters to prevent dangerous fuel leaks.\n\n**Who it affects:**\nOwners and operators of **Bell 206B series helicopters** with serial numbers **3567 through 3784** (including Agusta Bell 206 equivalents).\n\n**What you must do:**\nReplace the existing **aluminium fuel supply tube** with a new **stainless steel tube** before the specified compliance date, unless the work has already been completed.\n\n**Why it matters:**\nThe original aluminium tubes are prone to corrosion (rust and deterioration). If corrosion penetrates the tube wall, fuel or fuel fumes can leak into the helicopter cabin, creating serious fire and explosion hazards.\n\n**Technical details:**\nThe replacement must be done in accordance with the manufacturer's **Alert Service Bulletin 206-84-22**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-96-fuel-supply-tube-assembly","history":"/api/acts/ad-bell-206-96-fuel-supply-tube-assembly/history","analysis":"/api/acts/ad-bell-206-96-fuel-supply-tube-assembly/analysis","conflicts":"/api/acts/ad-bell-206-96-fuel-supply-tube-assembly/conflicts","importantCases":"/api/acts/ad-bell-206-96-fuel-supply-tube-assembly/important-cases","documents":"/api/acts/ad-bell-206-96-fuel-supply-tube-assembly/documents"}}