{"id":"F2008L00605","name":"AD/A330/60 Amdt 1 - Wing Shroud Box Bottom Panel","slug":"ad-a330-60-amdt-1-wing-shroud-box-bottom-panel","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119583,"registerId":"commonwealth-F2008L00605-current","compilationNumber":null,"startDate":"2026-04-03","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/A330/60 Amdt 1 | Wing Shroud Box Bottom Panel | 3/2008 |\n| ----------------- | ---------------------------- | ------ |\n\n| Applicability: | All Model A330-200 and -300 aircraft, all serial numbers, with AIRBUS modification 46077 incorporated in production; except aircraft with AIRBUS modification 55568 incorporated in production or AIRBUS Service Bulletin A330-57-3100 incorporated in service. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | Action in accordance with the requirements of EASA AD 2008-0002.Note: AIRBUS Service Bulletin A330-57-3100 original issue, or later EASA approved revision, refers. |\n| | As specified in the Requirement document. |\n| | This Amendment becomes effective on 13 March 2008. |\n| Background: | EASA received a report of an A330 aircraft wing shroud box bottom panel missing during routine inspection. Another report was received of the detachment of the same panel from an A330 aircraft during take-off, causing damage to the surrounding structure and to the horizontal stabiliser tip fairing. Preliminary investigation revealed that the blind rivets attaching the panel had worked loose, resulting in fatigue damage and crack propagation through the fastener line, with consequent detachment of the panel.Since the original issue of this Directive, three additional events of panel loss have been reported on aircraft already inspected in accordance with the requirements of the original AD.Amendment 1 is issued in response to a new EASA AD, which mandates the installation of a bolted shroud box bottom panel instead of blind riveted metallic design. |\n\n![](image.001.png) \nDavid Villiers \nDelegate of the Civil Aviation Safety Authority\n\n30 January 2008","sortOrder":0},{"sectionNumber":"AD/A330/60 Amdt 1","sectionType":"part","heading":"AD/A330/60 Amdt 1","content":"## AD/A330/60 Amdt 1","sortOrder":1},{"sectionNumber":"Wing Shroud Box Bottom Panel","sectionType":"part","heading":"Wing Shroud Box Bottom Panel","content":"## Wing Shroud Box Bottom Panel","sortOrder":2},{"sectionNumber":"3/2008","sectionType":"part","heading":"3/2008","content":"## 3/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Amendment 1 expands the original directive from inspection/remedial actions to a mandatory modification: it now requires installation of a bolted shroud box bottom panel in place of the blind‑riveted metallic design (per EASA AD 2008-0002). This shifts the remedy from repeat inspections/repairs to a design change for affected aircraft with mod 46077, except where mod 55568 or SB A330-57-3100 is already embodied."},"complexity_factors":["Reference to and mandatory compliance with an external EASA AD (2008-0002) and Airbus Service Bulletin A330-57-3100 (cross-document dependency).","Applicability carve-outs (applies to A330-200/-300 with mod 46077 except where mod 55568 or SB A330-57-3100 already incorporated).","Technical retrofit requirement (replacement of blind‑riveted panel with bolted panel) requiring parts, labour and downtime.","Amendment history and multiple reported incidents prompting expanded requirements (original AD plus Amendment 1).","Compliance timing (effective date specified) and inspection/remedial action obligations implied by the Requirement reference."],"plain_english_summary":"This airworthiness directive requires operators of Airbus A330-200/-300 aircraft produced with modification 46077 (unless modification 55568 or Airbus Service Bulletin A330-57-3100 is already embodied) to comply with EASA AD 2008-0002. Mechanically, it mandates replacing the blind‑riveted wing shroud box bottom panel with a bolted design; the amendment is effective 13 March 2008.\n\nThe change responds to incidents of panel loss caused by rivet fatigue. Compliance shifts retrofit, inspection and associated downtime and maintenance costs to aircraft operators while aiming to prevent further in‑flight panel detachments."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment stays tightly within the original purpose of addressing the wing shroud box panel defect. It does not expand to unrelated systems or aircraft types. The amendment simply strengthens the remedy (mandatory replacement vs. inspection) based on new incident data, which is the standard evolution of airworthiness directives when initial measures prove insufficient."},"complexity_factors":["Short, single-purpose instrument (approximately 300 words)","Only 2 defined applicability criteria (modification numbers) and 2 exemption criteria","Single cross-reference to EASA AD 2008-0002 and one Airbus Service Bulletin","No nested conditional logic or sub-delegation provisions","Straightforward amendment structure — replaces original inspection requirement with installation mandate","Technical aviation terminology present but contextually clear (shroud box, blind rivets, horizontal stabiliser)"],"plain_english_summary":"This CASA Airworthiness Directive orders owners/operators of certain Airbus A330-200/-300 aircraft (those with factory modification 46077) to fix a dangerous wing design: the wing shroud box bottom panel fastened with blind rivets can loosen, crack and detach in flight. \n\nAmendment 1 cancels inspections alone and requires replacing the riveted panel with a bolted design; aircraft with mod 55568 or already modified per Service Bulletin A330-57-3100 are exempt."},"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-a330-60-amdt-1-wing-shroud-box-bottom-panel","history":"/api/acts/ad-a330-60-amdt-1-wing-shroud-box-bottom-panel/history","analysis":"/api/acts/ad-a330-60-amdt-1-wing-shroud-box-bottom-panel/analysis","conflicts":"/api/acts/ad-a330-60-amdt-1-wing-shroud-box-bottom-panel/conflicts","importantCases":"/api/acts/ad-a330-60-amdt-1-wing-shroud-box-bottom-panel/important-cases","documents":"/api/acts/ad-a330-60-amdt-1-wing-shroud-box-bottom-panel/documents"}}