{"id":"F2009L00437","name":"AD/A330/99 - Centre Wing - Frame 40 Rear Fitting Web","slug":"ad-a330-99-centre-wing-frame-40-rear-fitting-web","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76910,"registerId":"commonwealth-F2009L00437-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A330 Series Aeroplanes","sectionType":"division","heading":"Airbus Industrie A330 Series Aeroplanes","content":"### Airbus Industrie A330 Series Aeroplanes\n\n| AD/A330/99 | Centre Wing - Frame 40 Rear Fitting Web | 3/2009 |\n| ---------- | --------------------------------------- | ------ |\n\n| Applicability: | Model A330-301, -321, -322, -341, and -342 aircraft, all serial numbers; except aircraft with modification 44360 incorporated in production.                                                                                                                                                                                                                                                                                                                                                                |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the requirements of EASA AD 2009-0001.Note: AIRBUS Service Bulletin A330-57-3107 original issue, or later EASA approved revision, refers.                                                                                                                                                                                                                                                                                                                                         |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of12 March 2009.                                                                                                                                                                                                                                                                                                                                                                                                                    |\n|                | This Airworthiness Directive becomes effective on 12 March 2009.                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n| Background:    | During accomplishment of A330-300 Airworthiness Limitation Item task57.11.04-01-02 of a fastener hole between stringer 38 and 39 at FR40 rear fitting web, a crack was found on an adjacent hole at vertical post Y1959 lower attachment on both sides. Other crack findings on this adjacent hole have been reported onA330-300 and A340-200/300 aircraft as a result of sampling inspections. Unless detected and corrected, crack propagation could result in the loss of fuselage structural integrity. |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n14 January 2009","sortOrder":0},{"sectionNumber":"AD/A330/99","sectionType":"part","heading":"AD/A330/99","content":"## AD/A330/99","sortOrder":1},{"sectionNumber":"Centre Wing - Frame 40 Rear Fitting Web","sectionType":"part","heading":"Centre Wing - Frame 40 Rear Fitting Web","content":"## Centre Wing - Frame 40 Rear Fitting Web","sortOrder":2},{"sectionNumber":"3/2009","sectionType":"part","heading":"3/2009","content":"## 3/2009","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific structural defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Short, single-purpose document (1 page)","Only 5 aircraft models affected, with 1 clear exception","Relies on external technical documents (EASA AD 2009-0001 and Airbus Service Bulletin A330-57-3107) for actual implementation details — the directive itself does not contain the technical procedures","Minimal defined terms (only standard aviation terminology like 'modification' and 'serial numbers')","Simple conditional logic: applies to all listed models EXCEPT those with modification 44360","Single compliance date with no phased or conditional timelines"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspections and repairs for potential cracks in the centre wing-to-fuselage Frame 40 rear fitting web on certain Airbus A330-300 series aircraft, following EASA and Airbus service instructions. It affects A330-301, -321, -322, -341 and -342 models (except those with factory modification 44360).\n\nThe issue risks loss of fuselage structural integrity; compliance is mandatory by 12 March 2009."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope of affected aircraft or the inspection/repair requirement; it continues to require compliance with EASA AD 2009-0001 (and the referenced Airbus service bulletin) for specified A330 variants, while only revising the effective date to 12 March 2009. Applicability remains A330-301, -321, -322, -341 and -342, except aircraft with modification 44360."},"complexity_factors":["Cross-reference to EASA AD 2009-0001 and Airbus Service Bulletin A330-57-3107 — operators must obtain and follow external technical documents (Requirement).","Limited applicability to specific A330 variants, with an explicit exclusion for aircraft incorporating modification 44360 — requires serial/modification-status checks (Applicability).","Mandated structural inspection and potential repair of the FR40 rear fitting web — requires maintenance engineering, access to the structure and possible part replacement (Background/Requirement).","Revised effective date (12 March 2009) imposes an administrative compliance timetable that operators must meet (Compliance).","Fleet-wide record searches and scheduling of inspections can cause operational disruption and direct maintenance costs (Background).","Phrase 'action in accordance with' leaves dependence on interpretation and on approved revisions of referenced documents — potential for compliance risk if versions differ (Requirement)."],"plain_english_summary":"Requires operators of Airbus A330-301/321/322/341/342 aircraft (except those built with modification 44360) to carry out the inspections and any corrective work set out in EASA AD 2009-0001 (and the Airbus service bulletin it references) for the centre wing Frame 40 rear fitting web. Effective 12 March 2009. The directive responds to discovered cracks at the FR40 rear fitting web that could propagate and compromise fuselage structural integrity, so operators must inspect and repair per the referenced documents."},"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-a330-99-centre-wing-frame-40-rear-fitting-web","history":"/api/acts/ad-a330-99-centre-wing-frame-40-rear-fitting-web/history","analysis":"/api/acts/ad-a330-99-centre-wing-frame-40-rear-fitting-web/analysis","conflicts":"/api/acts/ad-a330-99-centre-wing-frame-40-rear-fitting-web/conflicts","importantCases":"/api/acts/ad-a330-99-centre-wing-frame-40-rear-fitting-web/important-cases","documents":"/api/acts/ad-a330-99-centre-wing-frame-40-rear-fitting-web/documents"}}