{"id":"F2006B10155","name":"AD/GA8/2 - Aileron Control System","slug":"ad-ga8-2-aileron-control-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55745,"registerId":"commonwealth-F2006B10155-current","compilationNumber":null,"startDate":"2026-04-02","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\nGippsland Aeronautics GA8 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/GA8/2 Aileron Control System 11/2004","sectionType":"part","heading":"AD/GA8/2 Aileron Control System 11/2004","content":"# AD/GA8/2 Aileron Control System 11/2004\n\nApplicability: All aircraft with S/No.s GA8-00-004 through GA8-04-056.\n\n| Requirement: | 1.  | Action in accordance with Instructions: 1 Inspection of Gippsland Aeronautics Mandatory Service Bulletin SB-GA8-2004-11 Issue 2 dated 25 August 2004.                                                               |\n| ------------ | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Compliance:  | 1.  | As specified in the requirement document.                                                                                                                                                                           |\n|              | 2.  | For aircraft that have not been modified in accordance with Instructions: 3 Replacement of SB-GA8-2004-11 Issue 2 re-inspect in accordance with Requirement 1 at intervals not exceeding 300 hours time in service. |\n\nIncorporation of the modification to the control circuit by replacement of the original steel shafts with the bronze shafts as per section 3 of the requirements document is terminating action for the repetitive inspections required by this Airworthiness Directive. If only one side is modified, the repetitive inspection requirements continue to apply to the unmodified side.\n\nThis Airworthiness Directive becomes effective on 28 October 2004.\n\nBackground: The manufacturer has had several reported incidences of the aileron control stiffness and one incident of the aileron control locking during taxi after flight.\n\n![](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 17 September 2004\n\n![](image.001.png)","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD text itself defines its scope — applying to GA8 serial numbers GA8-00-004 through GA8-04-056 and prescribing inspection and replacement requirements. The document contains no statement or comparison indicating a change in scope from a prior instrument."},"complexity_factors":["Narrow fleet applicability (specific serial number range) reduces administrative complexity.","Technical work required: physical inspection and possible replacement of control shafts (references SB-GA8-2004-11 Issue 2).","Operational compliance burden: repetitive inspections at up to 300-hour intervals if modification not carried out (Compliance: 2).","Conditional terminating action: replacement of steel shafts with bronze shafts per section 3 of the requirements document terminates inspections for that side; partial modification leaves inspections for unmodified side (Requirement; Incorporation paragraph).","Dependence on the manufacturer's Mandatory Service Bulletin for procedural detail (Requirement: 1).","Legal basis cited is CASA subregulation 39.1(1), creating regulator discretion to require corrective action (preamble)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Gippsland Aeronautics GA8 aeroplanes (serial numbers GA8-00-004 to GA8-04-056) to inspect the aileron control system per Mandatory Service Bulletin SB-GA8-2004-11 Issue 2 and, if not modified, to repeat inspections at intervals not exceeding 300 hours. Replacing the original steel aileron control shafts with the bronze shafts specified in the service bulletin ends the repetitive inspection requirement for that side. The measure addresses reported control stiffness and a control lock incident."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive targeting a specific mechanical defect in a specific aircraft model range. It has not expanded beyond its original safety purpose."},"complexity_factors":["Short, single-purpose document (1 page)","Only 4 defined elements: applicability (serial numbers), requirement (inspection), compliance (timing), and terminating action (modification)","Simple conditional logic: 'if modified → stop inspecting; if partially modified → keep inspecting unmodified side'","No cross-references to other legislation beyond CASR 1998 subregulation 39.1(1) (the enabling power)","Clear, imperative language ('shall' implied through 'requires')","Single technical reference to manufacturer service bulletin"],"plain_english_summary":"This Airworthiness Directive affects owners/operators of specific Gippsland GA8 aircraft (serials GA8-00-004 to GA8-04-056). It requires inspections per the manufacturer’s service bulletin and, unless both steel aileron control shafts are replaced with bronze (a permanent fix), repeating inspections every 300 flight hours; if only one side is upgraded, inspections continue for the unmodified side.\n\nThe AD addresses aileron stiffness/locking that can cause loss of control on ground or in flight."},"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-ga8-2-aileron-control-system","history":"/api/acts/ad-ga8-2-aileron-control-system/history","analysis":"/api/acts/ad-ga8-2-aileron-control-system/analysis","conflicts":"/api/acts/ad-ga8-2-aileron-control-system/conflicts","importantCases":"/api/acts/ad-ga8-2-aileron-control-system/important-cases","documents":"/api/acts/ad-ga8-2-aileron-control-system/documents"}}