{"id":"F2006B04467","name":"AD/BELL 206/151 - Memcor Truohm Magnetic Brake","slug":"ad-bell-206-151-memcor-truohm-magnetic-brake","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44304,"registerId":"commonwealth-F2006B04467-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.001.png)\n\n![](image.001.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.\n\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters","sortOrder":0},{"sectionNumber":"AD/BELL 206/151 Memcor Truohm Magnetic B","sectionType":"part","heading":"AD/BELL 206/151 Memcor Truohm Magnetic Brake 12/2002","content":"# AD/BELL 206/151 Memcor Truohm Magnetic Brake 12/2002\n\nApplicability: Bell Helicopter Textron Canada models 206L-1 and Bell 206L-3 with IFR kits part number 206-705-001, \\-101, \\-103 installed.\n\nRequirement: Carry out a one time inspection, and repair if required in accordance with Bell Helicopter Textron Alert Service Bulletin 206L-01-122.\n\nNote : Canadian AD CF 2002-16 refers.\n\nCompliance: Unless previously accomplished within 100 flight hours from the effective date of this Directive.\n\nThis Airworthiness Directive becomes effective on 28 November 2002.\n\nBackground: There have been reports of adjustable stop screws backing out of the magnetic switch, manufactured by Memcor Truohm, which will limit the travel of the arm assembly on the magnetic brake. This could lead to limited travel of the flight controls.\n\n![Signature: Barry James Reid McKay](image.002.png)  \n\nBarry James Reid McKay\n\nDelegate of the Civil Aviation Safety Authority 18 October 2002\n\n![](image.001.png)","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD implements a targeted, one‑time inspection/repair requirement for the identified models and IFR kit part numbers and mirrors the referenced Canadian AD and Bell service bulletin. It does not broaden applicability beyond the listed helicopters or extend to other components; compliance is limited to the specified fleet and timeframe."},"complexity_factors":["Narrow applicability: only Bell 206L‑1 and 206L‑3 with IFR kits PN 206‑705‑001, ‑101, ‑103","Single mandatory action: one‑time inspection and repair reduces ongoing compliance complexity","Reliance on external technical document: must follow Bell Alert Service Bulletin 206L‑01‑122 (access required)","Technical nature of inspection/repair: involves adjustable stop screws in Memcor Truohm magnetic switch","Compliance timeframe: action required within 100 flight hours from effective date","Regulatory cross‑reference: implements CASA AD under CAR subreg 39.1(1) and notes Canadian AD CF 2002‑16"],"plain_english_summary":"Requires a one‑time inspection and any necessary repair of the Memcor Truohm magnetic brake on Bell 206L‑1 and 206L‑3 helicopters fitted with specified IFR kits, carried out per Bell Alert Service Bulletin 206L‑01‑122. Reports indicate adjustable stop screws can back out and restrict brake arm travel, which could limit flight‑control movement. The Civil Aviation Safety Authority (CASA) mandates this action within 100 flight hours; affected operators must schedule and pay for the inspection and any repairs."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, targeted airworthiness directive addressing a specific safety defect in specific helicopter models. The scope remains precisely limited to the magnetic brake issue described in the background section."},"complexity_factors":["Very short document (under 300 words)","Only 3 defined applicability criteria (specific helicopter models and part numbers)","Single, straightforward requirement (one-time inspection)","No nested exceptions or conditional logic","Clear compliance deadline (100 flight hours)","Minimal cross-referencing (only one reference to a Canadian AD and a manufacturer service bulletin)"],"plain_english_summary":"This Airworthiness Directive from CASA orders a one‑time inspection of the magnetic brake on Bell 206L‑1 and 206L‑3 helicopters equipped with IFR kits (PN 206‑705‑001, ‑101, or ‑103), with required repairs per Bell Helicopter instructions if faults are found. \n\nIt addresses a safety risk where adjustable stop screws can loosen and limit flight‑control travel, potentially making the helicopter difficult or impossible to control; inspection is required within 100 flight hours of the effective date."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-151-memcor-truohm-magnetic-brake","history":"/api/acts/ad-bell-206-151-memcor-truohm-magnetic-brake/history","analysis":"/api/acts/ad-bell-206-151-memcor-truohm-magnetic-brake/analysis","conflicts":"/api/acts/ad-bell-206-151-memcor-truohm-magnetic-brake/conflicts","importantCases":"/api/acts/ad-bell-206-151-memcor-truohm-magnetic-brake/important-cases","documents":"/api/acts/ad-bell-206-151-memcor-truohm-magnetic-brake/documents"}}