{"id":"F2006B02010","name":"AD/A330/35 - Aileron Servo Control Fittings Attachment","slug":"ad-a330-35-aileron-servo-control-fittings-attachment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41232,"registerId":"commonwealth-F2006B02010-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nAirbus Industrie A330 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/A330/35 Aileron Servo Control Fitting","sectionType":"part","heading":"AD/A330/35 Aileron Servo Control Fittings Attachment 8/2004","content":"# AD/A330/35 Aileron Servo Control Fittings Attachment 8/2004\n\nApplicability: Model A330-201, \\-202, \\-203, \\-223, \\-243, \\-301, \\-321, \\-322, 323, \\-341, \\-342, and –343\n\naircraft, on which the following Airbus service bulletins or modifications have been incorporated in service or production:\n\nService Bulletin A330-27-3075 (installation of standard ECP 8) or,\n\nService Bulletin A330-27-3054 (Mod 45512, installation of standard ECP 9).\n\nNote: Aircraft fitted with aileron servo-controls standard ECP 9 with large head attachment bolts incorporated in production, are not affected by this Directive.\n\nRequirement: Action in accordance with the requirements of DGAC AD F-2004-067.\n\nNote: Airbus Service Bulletins A330-57-3075 Revision 02 and A330-57-3076 refer.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 5 August 2004.\n\nThis Airworthiness Directive becomes effective on 5 August 2004.\n\nBackground: The manufacturer received reports of bush migration, including two cases of total bush loss, on the inboard and outboard aileron servo-controls actuator fitting, and a report of a crack on the aileron servo-control actuator fitting. Aileron servo-control actuator fitting bush migration and cracking, unless detected and corrected, could lead to rupture of the attachments of the two outboard aileron servo-controls and result in flutter of the control surface.\n\n![](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 21 June 2004\n\n![](image.001.png)","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The AD adopts the requirements of DGAC AD F-2004-067 for the listed A330 models fitted with specified service bulletins and sets an effective date; the text does not assert any expansion or narrowing of applicability beyond those listed conditions and notes an exclusion for production aircraft with large head bolts (Applicability; Requirement; Note; Compliance)."},"complexity_factors":["Cross-reference to a foreign authority's AD (DGAC AD F-2004-067) rather than full text in this instrument (Requirement).","Multiple Airbus service bulletins and modification references determine applicability and required work (Applicability; Note).","Model-specific applicability limited to certain A330 variants fitted with the listed SBs (Applicability).","Technical failure modes cited (bush migration, total bush loss, cracking) with an operational risk (control-surface flutter) that drives urgency (Background).","A revised effective/compliance date is specified, imposing calendar-bound obligations on operators (Compliance).","An explicit production exception (aircraft with large head attachment bolts not affected) creates an exclusion that operators must verify (Note).","Enforcement discretion resides with the CASA delegate issuing the AD under CASR subregulation 39.1(1) (preamble/signature)."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Airbus A330 models that have particular service-bulletin modifications to perform the inspections and corrective actions set out in DGAC AD F-2004-067 to address aileron servo-control fitting bush migration and cracking (Applicability; Requirement). Compliance is mandatory by 5 August 2004 (Compliance); costs of inspection and repair fall to aircraft operators and the CASA delegate enforces the directive (Compliance; Background)."},"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":3,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope. It addresses a specific mechanical defect in specific A330 models with specific modification histories. There is no evidence of scope creep — the directive does not expand to cover other aircraft types, other control surfaces, or unrelated systems. It remains tightly focused on the aileron servo-control fitting bush migration issue identified in the background."},"complexity_factors":["Short, single-purpose directive (approximately 300 words)","Only 2 main operative sections: Applicability and Requirement","Cross-references to external documents: French DGAC AD F-2004-067 and two Airbus Service Bulletins (A330-57-3075 Rev 02, A330-57-3076) — the actual technical work is outsourced to these documents","Simple conditional logic: applicability determined by aircraft model AND service bulletin history, with one explicit exemption","No nested definitions or interpretation sections — terms like 'bush migration' are explained in plain English in the Background","Single compliance trigger (effective date) with timing delegated to the referenced French directive"],"plain_english_summary":"This CASA safety order requires inspections and repairs on certain Airbus A330s that had ECP 8 or 9 aileron servo‑control fittings, to address bush migration and actuator‑fitting cracking that can let an outer aileron detach and induce destructive wing flutter. Operators must follow the French DGAC airworthiness directive and Airbus service bulletins (A330‑57‑3075/3076). Aircraft built with the larger “large head” attachment bolts are exempt. This is a mandatory, safety‑critical measure to prevent loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a330-35-aileron-servo-control-fittings-attachment","history":"/api/acts/ad-a330-35-aileron-servo-control-fittings-attachment/history","analysis":"/api/acts/ad-a330-35-aileron-servo-control-fittings-attachment/analysis","conflicts":"/api/acts/ad-a330-35-aileron-servo-control-fittings-attachment/conflicts","importantCases":"/api/acts/ad-a330-35-aileron-servo-control-fittings-attachment/important-cases","documents":"/api/acts/ad-a330-35-aileron-servo-control-fittings-attachment/documents"}}