{"id":"F2006L02849","name":"AD/A330/62 - CFRP Rudder","slug":"ad-a330-62-cfrp-rudder","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":60084,"registerId":"commonwealth-F2006L02849-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/A330/62 | CFRP Rudder | 10/2006 |\n| ---------- | ----------- | ------- |\n\n| Applicability: | All Model A330-300 aircraft, with CFRP rudder part number A55471500 series installed; and any rudder part number A55471500 series stored as a spare part.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with EASA AD 2006-0124.Note: Airbus All Operator Telex A330-55A3036, dated 2 March 2006; or later EASA approved revision, refers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |\n| Compliance:    | As specified in the Requirement document.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |\n|                | This Airworthiness Directive becomes effective on 28 September 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |\n| Background:    | During maintenance of an A300-600 aircraft, the carbon fibre reinforced plastic (CFRP) rudder was damaged. For damage assessment the lower rudder rib was removed. Other than the impact damage at the trailing edge location, an inner skin to honeycomb core disbond was detected at the lower skin close to the front spar. As part of the repair process, inspection revealed an area of damage on the inner skin starting at the junction between the rudder spar and the lower rib. Traces of hydraulic fluid were found in the disbonded area. Further tests showed a rapid propagation of the existing damage during artificial pressure testing. Analyses revealed reduced inner skin bonding characteristics together with limited contamination by hydraulic fluid. The rudder fitted to the A300-600 aircraft involved in this event is also installed on certain A330 aircraft. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n17 August 2006","sortOrder":0},{"sectionNumber":"AD/A330/62","sectionType":"part","heading":"AD/A330/62","content":"## AD/A330/62","sortOrder":1},{"sectionNumber":"CFRP Rudder","sectionType":"part","heading":"CFRP Rudder","content":"## CFRP Rudder","sortOrder":2},{"sectionNumber":"10/2006","sectionType":"part","heading":"10/2006","content":"## 10/2006","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive targets A330-300 aircraft fitted with, or holding as spares, CFRP rudders P/N A55471500 series and requires adherence to EASA AD 2006-0124. The instrument does not broaden applicability beyond those parts or introduce new categories; it extends the referenced EASA actions to the specified A330 fleet and spares (Applicability; Requirement)."},"complexity_factors":["Delegates technical tasks to an external airworthiness directive (EASA AD 2006-0124), so compliance steps are defined outside this instrument (Requirement).","Applies to both installed components and stored spare parts, requiring parts traceability and inventory checks (Applicability).","Inspection/repair extent depends on damage found during maintenance, creating variable workload and cost for operators (Background).","Compliance timing and procedures are controlled by the referenced document rather than by detailed steps here, limiting local discretion but increasing dependency on that document (Compliance).","Safety risk arises from material bond failure and contamination that can cause rapid propagation under pressure, necessitating potentially urgent maintenance action (Background)."],"plain_english_summary":"This directive requires operators of A330-300 aeroplanes that have the CFRP rudder part number A55471500 series (including spares) to carry out the inspections/repairs set out in EASA AD 2006-0124 (Requirement). Compliance must follow the referenced document and took effect 28 September 2006 (Requirement; Compliance; Effective date). The measure follows discovery of inner-skin disbonding and hydraulic-fluid contamination that can make rudder damage propagate rapidly (Background). Operators pay for inspections/repairs and must track affected spares (Applicability)."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific safety defect in a specific aircraft part. The scope remains tightly focused on the CFRP rudder issue identified in the Background section."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly used (CFRP = carbon fibre reinforced plastic, explained in Background)","Single cross-reference to external document (EASA AD 2006-0124) which contains the actual technical requirements","No nested conditions or exceptions — straightforward applicability and compliance","Technical content is delegated entirely to referenced Airbus and EASA documents"],"plain_english_summary":"This AD requires inspection and repair of certain carbon‑fibre rudders on Airbus A330‑300s (part number series A55471500) after discovery that hydraulic fluid can contaminate the honeycomb core, causing rapid inner‑skin separation.  \n\nIt applies to operators and spare‑part holders of those rudders and mandates compliance with EASA AD 2006‑0124 and Airbus AOT A330‑55A3036 to prevent rudder failure and potential loss of control."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-a330-62-cfrp-rudder","history":"/api/acts/ad-a330-62-cfrp-rudder/history","analysis":"/api/acts/ad-a330-62-cfrp-rudder/analysis","conflicts":"/api/acts/ad-a330-62-cfrp-rudder/conflicts","importantCases":"/api/acts/ad-a330-62-cfrp-rudder/important-cases","documents":"/api/acts/ad-a330-62-cfrp-rudder/documents"}}