{"id":"F2018L00987","name":"AD/BELL 214/7 Collective Sleeve","slug":"ad-bell-214-7-collective-sleeve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":97679,"registerId":"commonwealth-F2018L00987-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron 214B and 214B-1 ","sectionType":"division","heading":"Bell Helicopter Textron 214B and 214B-1 Series Helicopters","content":"### Bell Helicopter Textron 214B and 214B-1 Series Helicopters\n\n| AD/BELL 214/7 | Collective Sleeve | 13/2018 |\n| ------------- | ----------------- | ------- |\n\n| Applicability: | Bell Helicopter Textron Model 214B helicopters that have collective sleeve part number 214-010-411-001 or -003 with serial number A19-00001 through A19-00738 or serial number A-1 through A-10 installed.                                                                                                                                                                                                                                                                                                                                                        |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Perform a magnetic particle inspection of the affected collective sleeves using the procedures described in Bell Helicopter Textron Alert Service Bulletin 214‑84‑26, dated 12 March 1984, as in force at the commencement of this AD.If cracks are found in a collective sleeve during the Requirement 1 inspection, replace the collective sleeve with serviceable parts.Note 1: It is essential that the paint and primer be removed as described in the service bulletin prior to performing the magnetic particle inspection.Note 2: FAA AD 85-23-05 refers. |\n| Compliance:    | 1. a. Unless previously accomplished, before further flight after the commencement date of this directive, andb. Thereafter, at intervals not to exceed 250 hours time in service.2. Before further flight.                                                                                                                                                                                                                                                                                                                                                       |\n|                | This AD commences on 10 July 2018.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |\n| Background:    | This AD requires an immediate and repetitive magnetic particle inspection of the collective sleeve for cracks. Undetected cracks could propagate, resulting in failure of the collective sleeve and loss of collective control of the helicopter main rotor.                                                                                                                                                                                                                                                                                                      |\n\n![](image.001.jpeg)  \nPieter van Dijk  \nDelegate of the Civil Aviation Safety Authority\n\n27 June 2018","sortOrder":0},{"sectionNumber":"AD/BELL 214/7","sectionType":"part","heading":"AD/BELL 214/7","content":"## AD/BELL 214/7","sortOrder":1},{"sectionNumber":"Collective Sleeve","sectionType":"part","heading":"Collective Sleeve","content":"## Collective Sleeve","sortOrder":2},{"sectionNumber":"13/2018","sectionType":"part","heading":"13/2018","content":"## 13/2018","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific safety defect in specific helicopter models with specific part numbers. There is no evidence of scope creep beyond the original safety-critical inspection requirement."},"complexity_factors":["Single, clearly defined applicability criteria (specific part numbers and serial number ranges)","Straightforward two-part requirement: initial inspection + repetitive inspection at fixed interval","Only one cross-reference (to FAA AD 85-23-05 in a non-binding note)","Clear compliance dates and intervals (before further flight, then every 250 hours)","Minimal defined terms (only standard aviation terminology like 'time in service')","No nested exceptions or conditional logic — simple 'if cracks found, then replace' structure"],"plain_english_summary":"This CASA Airworthiness Directive mandates magnetic particle inspections of certain Bell 214B collective sleeves (specific part and serial numbers) before next flight after 10 July 2018, then every 250 flight hours, with replacement required if cracks are found. It affects operators of the identified helicopters and parts. The AD addresses cracking that could lead to collective failure and loss of main-rotor pitch control, presenting a crash risk."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive's scope is confined to collective sleeves with the specified part numbers and serial number ranges; the text shows no expansion or amendment beyond that applicability. The AD commences 10 July 2018 and imposes immediate and repetitive inspections and replacement when cracks are found (Applicability; Compliance; Requirement)."},"complexity_factors":["Technical inspection requirement (magnetic particle inspection) requiring removal of paint/primer and adherence to Bell Alert Service Bulletin procedures (Requirement; Note 1).","Narrow, detailed applicability by part number and two serial‑number ranges, creating a precise affected population (Applicability).","Immediate and repetitive compliance timing: initial inspection before further flight and repetitive inspections at intervals not to exceed 250 hours TIS (Compliance 1.a/b).","Mandatory replacement if cracks are found, creating parts-supply and maintenance-cost implications for operators (Requirement).","Reference to external documents (Bell Alert Service Bulletin 214‑84‑26; FAA AD 85-23-05), requiring operators to consult other instruments for full procedure and context (Requirement; Note 2).","Operational impact risk: helicopters may be grounded until inspection/replacement is completed (Compliance: \"before further flight\")."],"plain_english_summary":"This airworthiness directive requires immediate and repeated magnetic-particle inspections of certain Bell 214B/214B‑1 collective sleeves (specified part and serial number ranges). If a crack is found the sleeve must be replaced and inspections must follow Bell Helicopter Textron Alert Service Bulletin procedures.\n\nIt applies to owners/operators of the affected helicopters. The Civil Aviation Safety Authority issues the directive; operators must inspect before further flight and then at intervals not exceeding 250 hours TIS, removing paint/primer as required. The rule aims to detect cracks that could cause loss of collective control."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-214-7-collective-sleeve","history":"/api/acts/ad-bell-214-7-collective-sleeve/history","analysis":"/api/acts/ad-bell-214-7-collective-sleeve/analysis","conflicts":"/api/acts/ad-bell-214-7-collective-sleeve/conflicts","importantCases":"/api/acts/ad-bell-214-7-collective-sleeve/important-cases","documents":"/api/acts/ad-bell-214-7-collective-sleeve/documents"}}