{"id":"F2006B04349","name":"AD/BELL 204/5 Amdt 1 - Tail Rotor Pitch Control Slider","slug":"ad-bell-204-5-amdt-1-tail-rotor-pitch-control-slider","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44163,"registerId":"commonwealth-F2006B04349-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 204/5 Amdt 1 - Tail Rotor Pitch Control Slider","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n![](image.002.png)  \nBell Helicopter Textron 204 Series Helicopters\n\nAIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BELL 204/5 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nAD/BELL 204/5\n\nAmdt 1\n\n  \nTail Rotor Pitch Control Slider 8/2000\n\nApplicability: Model 204 B with slider P/N 204-010-720-3 installed. Requirement: Action in accordance with Bell 204B SB 204B-3.\n\nNote: FAA AD 67-24-01 refers.\n\nCompliance: For sliders with:\n\n    less than 300 hours time in service before further flight, and\n\n    b. more than 300 hours time in service, within 125 hours time in service after 24 September 1967.\n\nThis Amendment becomes effective on 10 August 2000.\n\nBackground: This directive was initially raised to remove particular sliders from service.\n\nThe Amendment and reissue is respectively to refer to the country of manufacture AD, and to prevent any of the affected sliders re-entering service. It also follows the re-introduction of the AD Series after sixteen years.\n\n![](image.003.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 6 July 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: ensuring unsafe tail rotor pitch control sliders are removed from service and stay removed. The background explicitly states the amendment merely updates references and prevents re-entry of affected parts, without expanding the substantive safety requirements."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly referenced (P/N = part number)","Single applicability criterion (specific helicopter model with specific part)","Simple binary compliance structure (two categories based on flight hours)","No cross-references to other legislation beyond a single note about FAA AD 67-24-01","No nested exceptions or conditional logic beyond the flight hour threshold"],"plain_english_summary":"This AD requires owners/operators of Bell 204B helicopters with tail rotor pitch control slider PN 204-010-720-3 to comply with Bell Service Bulletin 204B-3 to remove unsafe sliders and prevent their reinstallation. It references the FAA’s original directive identifying the hazard.\n\nSliders with <300 flight hours must be corrected before the next flight; those with >300 hours must be corrected within 125 flight hours after 24 September 1967. Effective 10 August 2000."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The instrument revokes the prior AD and reissues it to (a) expressly refer to the country‑of‑manufacture AD (FAA AD 67‑24‑01) and (b) prevent affected sliders re‑entering service. The background states: \"The Amendment and reissue is respectively to refer to the country of manufacture AD, and to prevent any of the affected sliders re‑entering service. It also follows the re‑introduction of the AD Series after sixteen years.\" These points narrow operational choices by adding an explicit prohibition on reuse and by tying required actions to the manufacturer/national AD."},"complexity_factors":["Narrow, specific applicability: single helicopter model (204B) and a single part number (204‑010‑720‑3), which simplifies identification but requires precise part records.","Cross‑reference to external documents (Bell Service Bulletin 204B‑3 and FAA AD 67‑24‑01) creates dependency on other texts for required actions.","Time‑based compliance distinctions (different deadlines for sliders with less than versus more than 300 hours TIS, and a historic cutoff date of 24 September 1967) add record‑checking burden.","Prohibition on re‑entry to service requires ongoing maintenance records and parts control to ensure removed sliders are not reused.","Enforcement discretion lies with CASA’s delegate under CAR subreg 39.1(1), so practical compliance timing and verification depend on regulator processes."],"plain_english_summary":"This AD requires removal or grounding of tail‑rotor pitch‑control slider P/N 204‑010‑720‑3 on Bell 204B helicopters and instructs operators to carry out the work described in Bell Service Bulletin 204B‑3 to address an unsafe condition. Aircraft owners/operators must perform and pay for the work; CASA (via its delegate under CAR subreg 39.1(1)) enforces the directive and it refers to FAA AD 67‑24‑01. The AD also prevents affected sliders from re‑entering service."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-204-5-amdt-1-tail-rotor-pitch-control-slider","history":"/api/acts/ad-bell-204-5-amdt-1-tail-rotor-pitch-control-slider/history","analysis":"/api/acts/ad-bell-204-5-amdt-1-tail-rotor-pitch-control-slider/analysis","conflicts":"/api/acts/ad-bell-204-5-amdt-1-tail-rotor-pitch-control-slider/conflicts","importantCases":"/api/acts/ad-bell-204-5-amdt-1-tail-rotor-pitch-control-slider/important-cases","documents":"/api/acts/ad-bell-204-5-amdt-1-tail-rotor-pitch-control-slider/documents"}}