{"id":"F2006B04617","name":"AD/BELL 222/27 - Memcor Truohm Magnetic Brake","slug":"ad-bell-222-27-memcor-truohm-magnetic-brake","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44369,"registerId":"commonwealth-F2006B04617-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) 222 Series Helicopters","sortOrder":0},{"sectionNumber":"AD/BELL 222/27 Memcor Truohm Magnetic Br","sectionType":"part","heading":"AD/BELL 222/27 Memcor Truohm Magnetic Brake 12/2002","content":"# AD/BELL 222/27 Memcor Truohm Magnetic Brake 12/2002\n\nApplicability: Bell Helicopter Textron Canada models 222, 222B, and 222U with IFR kits part number 222-70-013 installed.\n\nRequirement: Carry out a one time inspection, and repair if required in accordance with Bell Helicopter Textron Alert Service Bulletin 222-01-87 or 222U-01-58.\n\nNote : Canadian AD CF 2002-17 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![](image.002.png)  \n\nBarry James Reid McKay\n\nDelegate of the Civil Aviation Safety Authority 18 October 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 6 November 2002.","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"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD confines action to the specific Bell 222-series helicopters with the listed IFR kit and mandates a one-time inspection/repair to address reported backing-out of adjustable stop screws. The text explicitly references the related Canadian AD (CF 2002-17) and does not broaden or narrow the stated applicability or corrective action beyond that focus (Applicability; Requirement; Note; Background)."},"complexity_factors":["Narrow applicability limited to Bell 222, 222B, 222U with IFR kit P/N 222-70-013 (Applicability)","Single, one-time action (inspection and repair if required) reduces recurring compliance complexity (Requirement)","Compliance deadline tied to flight hours: within 100 flight hours from effective date (Compliance)","Substantive technical detail delegated to external Bell Alert Service Bulletins 222-01-87 / 222U-01-58 (Requirement) — operators must obtain and follow those documents","Regulatory basis explicitly given: issued under subregulation 39.1(1) of CAR 1998 (issuance statement)","Safety risk identified (stop screws backing out limiting control travel) is specific and mechanically described (Background)","References an equivalent Canadian AD (CF 2002-17), creating reliance on a foreign AD for context (Note)"],"plain_english_summary":"Requires operators of Bell 222/222B/222U helicopters fitted with IFR kit P/N 222-70-013 to perform a one-time inspection of the Memcor Truohm magnetic brake adjustable stop screws and repair if necessary, following the Bell Alert Service Bulletins, within 100 flight hours.\n\nCASA states the measure responds to reports of stop screws backing out and restricting flight control travel; operators must carry out and pay for the inspection/repairs, and the AD is issued under subregulation 39.1(1) of CAR 1998."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific mechanical defect in a specific component on specific helicopter models. There is no evidence of scope creep; it remains a targeted safety intervention for the Memcor Truohm magnetic brake issue."},"complexity_factors":["Very short document (under 300 words)","Only 3 defined elements: specific helicopter models, specific part number, and specific service bulletins","Single straightforward requirement with one condition (unless previously accomplished)","No nested exceptions or conditional logic","Clear, unambiguous compliance deadline","Minimal cross-referencing (only to Canadian AD and Bell service bulletins)"],"plain_english_summary":"CASA has issued a mandatory safety order requiring owners/operators of Bell 222, 222B and 222U helicopters fitted with the IFR kit (P/N 222‑70‑013) to inspect the Memcor Truohm magnetic brake and repair it if needed. Reports that adjustable stop screws can loosen and fall out—potentially restricting flight‑control travel—make this a one‑time, legally binding inspection/repair requirement to preserve airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-222-27-memcor-truohm-magnetic-brake","history":"/api/acts/ad-bell-222-27-memcor-truohm-magnetic-brake/history","analysis":"/api/acts/ad-bell-222-27-memcor-truohm-magnetic-brake/analysis","conflicts":"/api/acts/ad-bell-222-27-memcor-truohm-magnetic-brake/conflicts","importantCases":"/api/acts/ad-bell-222-27-memcor-truohm-magnetic-brake/important-cases","documents":"/api/acts/ad-bell-222-27-memcor-truohm-magnetic-brake/documents"}}