{"id":"F2007L02193","name":"AD/ATR 42/7 - Aileron Tab Bellcrank Assembly","slug":"ad-atr-42-7-aileron-tab-bellcrank-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":67436,"registerId":"commonwealth-F2007L02193-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Avions de Transport Regional ATR 42 Seri","sectionType":"division","heading":"Avions de Transport Regional ATR 42 Series Aeroplanes","content":"### Avions de Transport Regional ATR 42 Series Aeroplanes\n\n| AD/ATR 42/7 | Aileron Tab Bellcrank Assembly | 8/2007 |\n| ----------- | ------------------------------ | ------ |\n\n| Applicability: | All Model ATR 42 aircraft, all serial numbers, except aircraft with ATR modification 04372 incorporated in production or with ATR Service Bulletin (SB)ATR42-27-0081 or SB ATR42-27-0092 incorporated in service.                                                 |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the requirements of EASA AD 2006-0376.Note: ATR Service Bulletin ATR42-27-0098 original issue, or later EASA approved revision, refers.                                                                                                 |\n| Compliance:    | Unless already accomplished, before 30 August 2007.                                                                                                                                                                                                               |\n|                | This Airworthiness Directive becomes effective on 2 August 2007.                                                                                                                                                                                                  |\n| Background:    | Reports were received of in-service aircraft with aileron tab bellcrank assemblies that do not conform with design drawings. This Directive requires inspection of the aileron tab bellcrank retainer and, if necessary, restoration of the correct installation. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n22 June 2007","sortOrder":0},{"sectionNumber":"AD/ATR 42/7","sectionType":"part","heading":"AD/ATR 42/7","content":"## AD/ATR 42/7","sortOrder":1},{"sectionNumber":"Aileron Tab Bellcrank Assembly","sectionType":"part","heading":"Aileron Tab Bellcrank Assembly","content":"## Aileron Tab Bellcrank Assembly","sortOrder":2},{"sectionNumber":"8/2007","sectionType":"part","heading":"8/2007","content":"## 8/2007","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive targeting a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 3 substantive sections: Applicability, Requirement, and Compliance","Single cross-reference to European regulation (EASA AD 2006-0376) and manufacturer service bulletin","Simple conditional logic: applies to all aircraft except those with specific modifications already installed","No defined terms section, no nested exceptions, no procedural subsections"],"plain_english_summary":"This CASA Airworthiness Directive requires ATR 42 operators to inspect and, if necessary, repair the aileron tab bellcrank (bellcrank retainer) because some units were installed incorrectly. Operators already modified per ATR mod 04372 or SB ATR42-27-0081/0092 are exempt. Compliance must follow EASA AD 2006-0376 and ATR SB ATR42-27-0098 before 30 August 2007. The action prevents possible roll-control problems from non‑conforming flight‑control hardware."},"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"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The text shows no alteration to the instrument's scope: it applies to all ATR 42 aircraft except those with the stated modification or service bulletins incorporated, and mandates inspection/restoration per the cited EASA AD (Applicability; Requirement). No evidence in the document indicates a change from that stated scope."},"complexity_factors":["Reference to external instruments (EASA AD 2006-0376 and ATR SB ATR42-27-0098) requires cross-referencing and may create interpretive work (Requirement).","Conditional applicability — exceptions for aircraft with ATR mod 04372 or specified SBs — requires records checks to determine applicability (Applicability).","Short compliance window between effective date (2 Aug 2007) and compliance deadline (30 Aug 2007) compresses scheduling for operators and MROs (Compliance).","Technical action: inspection of a specific component and possible restoration to conforming installation requires certified maintenance personnel, parts and labour planning (Requirement; Background).","Mandatory legal force as an Airworthiness Directive creates enforceable obligations and potential regulatory follow-up (entire instrument)."],"plain_english_summary":"This Airworthiness Directive requires operators of ATR 42 aeroplanes (all serial numbers except those with ATR mod 04372 or specified service bulletins) to inspect the aileron tab bellcrank retainer and, if non‑conforming, restore correct installation per EASA AD 2006‑0376 and ATR SB ATR42‑27‑0098 (Applicability; Requirement). It takes effect 2 Aug 2007 and must be completed by 30 Aug 2007 (Compliance). The operator or maintenance provider must do and pay for the work; the regulator sets the method and deadline."}},"importantCases":[],"_links":{"self":"/api/acts/ad-atr-42-7-aileron-tab-bellcrank-assembly","history":"/api/acts/ad-atr-42-7-aileron-tab-bellcrank-assembly/history","analysis":"/api/acts/ad-atr-42-7-aileron-tab-bellcrank-assembly/analysis","conflicts":"/api/acts/ad-atr-42-7-aileron-tab-bellcrank-assembly/conflicts","importantCases":"/api/acts/ad-atr-42-7-aileron-tab-bellcrank-assembly/important-cases","documents":"/api/acts/ad-atr-42-7-aileron-tab-bellcrank-assembly/documents"}}