{"id":"F2006B01995","name":"AD/A330/16 - Rudder Servo-Controls","slug":"ad-a330-16-rudder-servo-controls","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41217,"registerId":"commonwealth-F2006B01995-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\n![](image.001.png)  \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\nAirbus Industrie A330 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/A330/16 Rudder Servo-Controls 5/2003","sectionType":"part","heading":"AD/A330/16 Rudder Servo-Controls 5/2003","content":"# AD/A330/16 Rudder Servo-Controls 5/2003\n\nApplicability: All Model A330-201, \\-202, \\-203, \\-223, and \\-243 aircraft; except for aircraft with Airbus Modification 48510 incorporated in production, or Airbus Service Bulletin A330-27-3101 incorporated in service.\n\nRequirement: Modify the three rudder servo-controls in accordance with Airbus Service Bulletin A330-27-3101.\n\nNote: DGAC AD 2003-102(B) refers.\n\nCompliance: Before 30 June 2005, unless already accomplished.\n\nThis Airworthiness Directive becomes effective on 15 May 2003.\n\nBackground: During a pre- flight check on a Model A330-200 aircraft, the message “F/CTL RUD Y SERVO JAM” was displayed. Two further occurrences have been reported on other aircraft. Investigation revealed the driving finger of the affected rudder servo-control had failed due to fatigue, with consequent loss of the rudder servo-control. If not corrected, loss of the rudder servo-control, combined with an engine failure at take- off or during go-around, could lead to a potentially critical situation.\n\n![](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 4 April 2003\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 23 April 2003.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive preserves the original corrective scope: it targets the three rudder servo‑controls on specified A330 models and excludes aircraft already modified by Airbus Mod 48510 or Service Bulletin A330‑27‑3101 (Applicability/Requirement). It does not expand applicability beyond those models or add additional obligations beyond the required modification and the compliance deadline (Requirement/Compliance)."},"complexity_factors":["Technical execution: requires a specific modification of three rudder servo‑controls per Airbus Service Bulletin A330‑27‑3101 (Requirement).","Applicability exclusions: excludes aircraft with Airbus Modification 48510 or the service bulletin already incorporated, which requires verification by operators (Applicability).","Compliance timing: mandatory completion before a fixed deadline (30 June 2005), creating scheduling and resource pressure for operators (Compliance).","Safety consequence linkage: failure could interact with engine failure to produce a critical outcome, increasing inspection and maintenance priority (Background).","Regulatory basis and enforceability: issued under CASR 1998 subregulation 39.1(1) and made effective 15 May 2003, so non‑compliance has statutory consequences (preamble/effective date).","Cross‑reference to foreign authority: notes DGAC AD 2003‑102(B), requiring operators to track multiple regulatory sources (Note).","Record and verification burden: operators must demonstrate incorporation of the modification or existing exemption (Applicability/Compliance)."],"plain_english_summary":"This Directive requires modification of the three rudder servo‑controls on specified Airbus A330 models, following Airbus Service Bulletin A330‑27‑3101. It affects operators/owners of A330‑201/202/203/223/243 aircraft (unless Airbus Mod 48510 or that service bulletin is already fitted) and must be done before 30 June 2005 to prevent a rudder‑servo failure that could, with an engine failure, create a critical situation."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical failure mode in specific aircraft models. The scope remains precisely limited to the rudder servo-control modification as originally intended."},"complexity_factors":["Single, specific mechanical modification required","Clear applicability section with only 5 model variants and 2 exceptions","One unambiguous compliance deadline","No nested conditions or cross-references to other legislation (only a reference to the French aviation authority's equivalent directive and the technical service bulletin)","Background provides straightforward factual explanation of the safety risk"],"plain_english_summary":"This CASA safety order requires operators of certain Airbus A330-200 series aircraft to modify the rudder servo-control per Airbus Service Bulletin A330-27-3101 (unless Mod 48510 or the SB is already embodied). The change addresses fatigue cracking of the servo-control “driving finger” that has jammed systems in three incidents and could cause loss of control if coincident with an engine failure. Compliance was required by 30 June 2005; effective 15 May 2003."},"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-a330-16-rudder-servo-controls","history":"/api/acts/ad-a330-16-rudder-servo-controls/history","analysis":"/api/acts/ad-a330-16-rudder-servo-controls/analysis","conflicts":"/api/acts/ad-a330-16-rudder-servo-controls/conflicts","importantCases":"/api/acts/ad-a330-16-rudder-servo-controls/important-cases","documents":"/api/acts/ad-a330-16-rudder-servo-controls/documents"}}