{"id":"F2007L02191","name":"AD/ATR 42/9 - Outer Wings","slug":"ad-atr-42-9-outer-wings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":67431,"registerId":"commonwealth-F2007L02191-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 42/9 | Outer Wings | 8/2007 |\n| ----------- | ----------- | ------ |\n\n| Applicability: | Model ATR 42-200 and -300 aircraft, without modification 2805 or modification 8039 incorporated.                                                                                                              |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the requirements of DGAC AD 93-190-051(B).Note: ATR Service Bulletins ATR42-57-0038 original issue, and ATR42-57-0040 original issue, or later DGAC/EASA approved revisions, refer. |\n| Compliance:    | As specified in the Requirement document.                                                                                                                                                                     |\n|                | This Airworthiness Directive becomes effective on 2 August 2007.                                                                                                                                              |\n| Background:    | During aircraft wing fatigue testing, damage was detected in the outer wing area.                                                                                                                             |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n22 June 2007","sortOrder":0},{"sectionNumber":"AD/ATR 42/9","sectionType":"part","heading":"AD/ATR 42/9","content":"## AD/ATR 42/9","sortOrder":1},{"sectionNumber":"Outer Wings","sectionType":"part","heading":"Outer Wings","content":"## Outer Wings","sortOrder":2},{"sectionNumber":"8/2007","sectionType":"part","heading":"8/2007","content":"## 8/2007","sortOrder":3}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive addressing a specific structural safety issue discovered during fatigue testing. It has not expanded beyond its original purpose of mandating wing inspections for specific aircraft models."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 2 defined applicability criteria (specific model numbers and modification exclusions)","Single requirement referencing external documents rather than detailing technical steps inline","No nested conditional logic or exceptions within the directive itself","No internal cross-references to other sections of Australian legislation","Relies entirely on incorporated external documents (DGAC AD and ATR Service Bulletins) for technical detail"],"plain_english_summary":"CASA requires owners/operators of ATR 42-200/300 aircraft without modifications 2805 and 8039 to inspect and repair the outer wings after fatigue testing found damage that could lead to cracks or structural failure. \n\nCompliance is by following French DGAC AD 93-190-051(B) and ATR service bulletins detailing the required inspections and repairs. It affects Australian operators and Australian-registered ATR 42s worldwide; effective 2 August 2007."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The AD narrows its effect to ATR 42-200 and -300 aeroplanes lacking modifications 2805 or 8039 and imposes corrective action per an external DGAC AD and service bulletins. The text contains no indication it expands or reduces the original certification scope beyond those specified applicability limits."},"complexity_factors":["Cross-reference to an external foreign AD (DGAC AD 93-190-051(B)) rather than containing full inspection/repair steps.","Reliance on ATR service bulletins (ATR42-57-0038 and ATR42-57-0040) and any later DGAC/EASA‑approved revisions introduces variant compliance paths.","Applicability limited by aircraft model and absence of specific modifications (2805, 8039), requiring record checks to determine applicability.","\"As specified in the Requirement document\" creates dependence on timing/contents of external documents rather than the AD text itself.","Technical subject matter (wing fatigue/structural inspections and repairs) requires certified maintenance organisations and potentially significant labour/parts costs.","Enforcement and effectiveness hinge on the CASA delegate’s declaration and coordination with foreign authority documents."],"plain_english_summary":"This Airworthiness Directive requires operators of ATR 42‑200 and ‑300 aeroplanes (without modifications 2805 or 8039) to carry out inspections and any required repairs of the outer wing in accordance with DGAC AD 93‑190‑051(B) and the referenced ATR service bulletins (ATR42‑57‑0038, ATR42‑57‑0040 or later DGAC/EASA‑approved revisions). The directive is effective 2 August 2007. Operators (aircraft owners) pay for compliance and maintenance; CASA issued the directive and delegates enforce it (Applicability/Requirement/Compliance/Background)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-atr-42-9-outer-wings","history":"/api/acts/ad-atr-42-9-outer-wings/history","analysis":"/api/acts/ad-atr-42-9-outer-wings/analysis","conflicts":"/api/acts/ad-atr-42-9-outer-wings/conflicts","importantCases":"/api/acts/ad-atr-42-9-outer-wings/important-cases","documents":"/api/acts/ad-atr-42-9-outer-wings/documents"}}