{"id":"F2006B04460","name":"AD/BELL 206/145 - Tail Rotor Blade Part Number 206-016-201","slug":"ad-bell-206-145-tail-rotor-blade-part-number-206-016-201","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44297,"registerId":"commonwealth-F2006B04460-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS 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 issues the following Airworthiness Directive (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.","sortOrder":0},{"sectionNumber":"AD/BELL 206/145 Tail Rotor Blade Part Nu","sectionType":"part","heading":"AD/BELL 206/145 Tail Rotor Blade Part Number 206-016-201 10/2000","content":"# AD/BELL 206/145 Tail Rotor Blade Part Number 206-016-201 10/2000\n\nTX\n\nApplicability: All Agusta-Bell AB206A and AB206B helicopters equipped with tail rotor blade part number 206-016-201 (all dash numbers) that have accumulated less than 25 flight hours.\n\nAll Bell Helicopter Textron Canada 206 series helicopters equipped with tail rotor blade part number 206-016-201 (all dash numbers) that were procured through Agusta SpA and have accumulated less than 25 flight hours.\n\nRequirement: Action in accordance with Agusta Bollettino Technico 206-234, dated 10 August 2000.\n\nNote: RAI AD 2000-394 refers.\n\nCompliance: Before further flight after 18 August 2000 for Part I of the Requirement document, unless already accomplished. As specified in the Requirement document for the Part II requirement, if affected.\n\nThis Airworthiness Directive becomes effective on 18 August 2000.\n\nBackground: Reports have been received of two cases of the loss of the central balance weight, installed at the tip of the affected tail rotor blades. This Directive requires certain actions, and a radiographic inspection if affected.\n\n![Signature: Steve Swift](image.003.png)  \n\nSteve Swift\n\nDelegate of the Civil Aviation Safety Authority 18 August 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 18 August 2000.","sortOrder":1}],"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 is a targeted safety directive addressing a specific mechanical defect in specific helicopter models. The scope remains precisely limited to the unsafe condition described (loss of tail rotor balance weights) and has not expanded beyond this original safety purpose."},"complexity_factors":["Very short document (under 500 words)","Only 2 defined applicability categories (helicopter models)","Single requirement referencing an external technical document (Agusta Bollettino Technico 206-234)","Simple two-part compliance structure (immediate action + conditional follow-up)","No nested exceptions or conditional logic beyond the 25 flight hour threshold","Minimal cross-referencing (only one note referring to RAI AD 2000-394)"],"plain_english_summary":"This mandatory CASA airworthiness directive orders immediate inspection of certain Bell 206/Agusta‑Bell AB206A/B tail rotor blades (PN 206‑016‑201, <25 flight hours) because the tip balance weight can detach, risking loss of tail-rotor control and a crash. Operators must follow Agusta Bollettino Tecnico 206‑234 — immediate inspection before further flight (after 18 Aug 2000) and radiographic inspection where the defect is found."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD confines its scope to helicopters fitted with tail rotor blade part number 206‑016‑201 (all dash numbers) with less than 25 flight hours, and to blades procured through Agusta where specified. It requires corrective action and conditional radiographic inspection per the manufacturer bulletin; there is no textual indication the AD expands applicability beyond those limits."},"complexity_factors":["External dependency: requires following Agusta Bollettino Technico 206‑234 (manufacturer document referenced rather than reproducing procedures).","Technical requirement: radiographic inspection entails specialist skills/equipment and possible downtime/repair.","Narrow applicability: applicability depends on part number and accumulated flight hours (<25), which requires record checks to determine applicability.","Immediate compliance timing: Part I action required before further flight after the effective date, creating potential operational disruption.","Regulatory reference: issued under CASA delegate authority (CAR 1998 subreg 39.1(1)) and cross‑references RAI AD 2000‑394, introducing reliance on other regulatory documents."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Agusta‑Bell AB206A/AB206B and certain Bell 206 series helicopters fitted with tail rotor blade part number 206‑016‑201 (and with less than 25 flight hours) to carry out corrective action and, if indicated, a radiographic inspection in accordance with Agusta Bollettino Technico 206‑234. The CASA delegate issues the AD under CAR 1998 subreg 39.1(1); operators bear the cost and must complete required actions before further flight as specified in the Requirement and Compliance sections."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-145-tail-rotor-blade-part-number-206-016-201","history":"/api/acts/ad-bell-206-145-tail-rotor-blade-part-number-206-016-201/history","analysis":"/api/acts/ad-bell-206-145-tail-rotor-blade-part-number-206-016-201/analysis","conflicts":"/api/acts/ad-bell-206-145-tail-rotor-blade-part-number-206-016-201/conflicts","importantCases":"/api/acts/ad-bell-206-145-tail-rotor-blade-part-number-206-016-201/important-cases","documents":"/api/acts/ad-bell-206-145-tail-rotor-blade-part-number-206-016-201/documents"}}