{"id":"F2006B04418","name":"AD/BELL 206/105 Amdt 1 - Airframe Fuel Filter Assembly","slug":"ad-bell-206-105-amdt-1-airframe-fuel-filter-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44243,"registerId":"commonwealth-F2006B04418-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/105 Amdt 1 - Airframe Fuel Filter Assembly","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\nAD/BELL 206/105\n\nAmdt 1\n\n  \nAirframe Fuel Filter Assembly 3/87\n\nApplicability: All the following model helicopters fitted with fuel filter assembly P/N 222-366-621- 003 or P/N 52-2889- 016 or 016A.\n\nModels: 206A S/N 1 to 660 and S/N 672 to 715\n\n206 BJR11 S/N 661 to 671 and S/N 716 to 2211\n\n206 BJR111 S/N 2212 to 3953\n\n206L S/N 45001 to 45153 and S/N 46601 to 46617\n\n206L-1 S/N 45154 to 45790\n\n206L-3 S/N 51001 to 51193\n\nAgusta-Bell AB206A and AB206B to S/N 8703\n\nRequirement: Action in accordance with Bell Helicopter ASB 206-86-34 Rev. A, 206L-86-41 or Agusta-Bell SB 206-177.\n\nNote: Michigan Dynamics fuel filter P/N 306001 may have been retrofitted to the 206L, it is therefore to be included in the inspection and rectification of the 206L filters.\n\nCompliance: Part II or Part III, as applicable, of Requirement Document: At the next airframe fuel filter change or within 300 hours time in service after 31 January 1987 whichever occurs first, but no later than the 31 March 1987.\n\nBackground: An engine flame-out has occurred due to air trapped in the fuel system. This Directive provides a modification of the filter head which provides self bleeding of the bypass valve and switch chamber. This Directive has been amended to include Agusta-Bell models.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1651},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"Originally limited to Bell Helicopter Textron Canada models; Amendment 1 expanded scope to include Agusta-Bell AB206A and AB206B helicopters (serial numbers up to 8703)."},"complexity_factors":["References to three external technical service bulletins requiring cross-consultation","Seven distinct helicopter model variants with specific serial number ranges (e.g., 206A S/N 1-660 and 672-715)","Multiple specific part number identifiers across different manufacturers (P/N 222-366-621-003, 52-2889-016, 016A, 306001)","Dual-path compliance calculation with ceiling date (next filter change OR 300 hours TIS, capped by 31 March 1987 hard deadline)"],"plain_english_summary":"This directive mandates modification of certain Bell 206 and Agusta‑Bell AB206 helicopters’ fuel filter heads to automatically bleed trapped air that can cause sudden engine flame‑outs. It applies to specific 206/206L series airframes using listed fuel‑filter part numbers (including some retrofitted Michigan Dynamics filters on 206L). Operators must comply by following the stated Bell/Agusta service bulletins at the next filter change or within 300 flight hours after 31 Jan 1987, and no later than 31 Mar 1987."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-105-amdt-1-airframe-fuel-filter-assembly","history":"/api/acts/ad-bell-206-105-amdt-1-airframe-fuel-filter-assembly/history","analysis":"/api/acts/ad-bell-206-105-amdt-1-airframe-fuel-filter-assembly/analysis","conflicts":"/api/acts/ad-bell-206-105-amdt-1-airframe-fuel-filter-assembly/conflicts","importantCases":"/api/acts/ad-bell-206-105-amdt-1-airframe-fuel-filter-assembly/important-cases","documents":"/api/acts/ad-bell-206-105-amdt-1-airframe-fuel-filter-assembly/documents"}}