{"id":"F2006L00758","name":"AD/GA8/4 - Seat Track Stops","slug":"ad-ga8-4-seat-track-stops","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136781,"registerId":"commonwealth-F2006L00758-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Gippsland Aeronautics GA8 Series Aeropla","sectionType":"division","heading":"Gippsland Aeronautics GA8 Series Aeroplanes","content":"### Gippsland Aeronautics GA8 Series Aeroplanes\n\n| AD/GA8/4 | Seat Track Stops | 4/2006 |\n| -------- | ---------------- | ------ |\n\n| Applicability: | All GA8 serial numbers up to S/N GA8-05-088.                                                                                                                                                                                                                                            |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Modify the seat track stops in accordance with Gippsland Aeronautics Service Bulletin SB-GA8-2005-29 Issue 2 or later approved revision.                                                                                                                                                |\n| Compliance:    | To be complied with at the next periodic inspection after 30 April 2006.                                                                                                                                                                                                                |\n|                | This Airworthiness Directive becomes effective on 13 April 2006.                                                                                                                                                                                                                        |\n| Background:    | The current location of the pilot and second occupant seat stops is such that, at either seat’s most forward position, aft movement of the control column can be restricted by the seat structure. This Airworthiness Directive relocates the seat stops to eliminate this possibility. |\n\n![](image.001.png)  \nGreg Vaughan  \nDelegate of the Civil Aviation Safety Authority\n\n3 March 2006","sortOrder":0},{"sectionNumber":"AD/GA8/4","sectionType":"part","heading":"AD/GA8/4","content":"## AD/GA8/4","sortOrder":1},{"sectionNumber":"Seat Track Stops","sectionType":"part","heading":"Seat Track Stops","content":"## Seat Track Stops","sortOrder":2},{"sectionNumber":"4/2006","sectionType":"part","heading":"4/2006","content":"## 4/2006","sortOrder":3}],"analysis":{"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":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive remains tightly scoped to its original safety purpose — correcting a specific mechanical interference issue in a defined aircraft model and serial number range. No scope creep is evident."},"complexity_factors":["Single, specific applicability criterion (serial number range)","Single mandatory action with clear reference to external technical document (Service Bulletin)","Simple compliance deadline tied to existing maintenance schedule","No defined terms section, no cross-references to other legislation, no conditional exceptions","Plain language background explanation included","Total length: approximately 150 words of substantive content"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of certain Gippsland Aeronautics GA8 aircraft (serials up to GA8-05-088) to install modified seat track stops so forward seats cannot block rearward movement of the control column. The change (per SB‑GA8‑2005‑29 Issue 2 or later) must be done by the next scheduled periodic inspection after 30 April 2006 to prevent loss of control."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive sticks to its stated technical purpose: relocating seat stops for the identified serial-number range to prevent control‑column restriction. It does not broaden applicability or add unrelated requirements beyond compliance with the named service bulletin and the specified inspection timing."},"complexity_factors":["Narrow applicability: applies only to GA8 serial numbers up to S/N GA8-05-088 (Applicability).","Single, discrete engineering action: relocate seat track stops per Service Bulletin SB-GA8-2005-29 Issue 2 (Requirement).","Dependency on an external document: instructs compliance 'in accordance with' a service bulletin and allows 'later approved revision' (Requirement) which creates document-control dependency.","Compliance timing fixed to the next periodic inspection after 30 April 2006 (Compliance) rather than an immediate grounding, reducing operational disruption but introducing scheduling reliance on inspection cycles.","Obligation and cost fall to owner/operators who must arrange and fund the modification (implicit in Requirement/Compliance).","Legal force and issuing authority are explicit: AD effective 13 April 2006 and issued by a CASA delegate (effective date and signature), establishing enforceability."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Gippsland Aeronautics GA8 aeroplanes (serial numbers up to GA8-05-088) to modify the seat track stops by following Service Bulletin SB-GA8-2005-29 Issue 2 (or a later approved revision).\n\nMechanically, the change relocates the pilot and front‑seat stops so the seat cannot restrict aft movement of the control column. Compliance is due at the next periodic inspection after 30 April 2006; the owner/operator must arrange and pay for the work."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ga8-4-seat-track-stops","history":"/api/acts/ad-ga8-4-seat-track-stops/history","analysis":"/api/acts/ad-ga8-4-seat-track-stops/analysis","conflicts":"/api/acts/ad-ga8-4-seat-track-stops/conflicts","importantCases":"/api/acts/ad-ga8-4-seat-track-stops/important-cases","documents":"/api/acts/ad-ga8-4-seat-track-stops/documents"}}