{"id":"F2008L03976","name":"AD/BEECH 90/62 Amdt 1 - Horizontal Stabiliser Forward Spar Web Rivets - Inspection","slug":"ad-beech-90-62-amdt-1-horizontal-stabiliser-forward-spar-web-rivets-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75753,"registerId":"commonwealth-F2008L03976-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 90 and 65-90 (King Air) Serie","sectionType":"division","heading":"Beechcraft 90 and 65-90 (King Air) Series Aeroplanes","content":"### Beechcraft 90 and 65-90 (King Air) Series Aeroplanes\n\n| AD/BEECH 90/62 Amdt 1 | Horizontal Stabiliser ForwardSpar Web Rivets - Inspection | 12/2008 |\n| --------------------- | --------------------------------------------------------- | ------- |\n\n| Applicability: | All model F90 with S/Nos. LA-2 to LA-101.                                                                                                                                                                                                                                                            |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with Beechcraft Service Instruction 1192.                                                                                                                                                                                                                                       |\n| Compliance:    | Prior to the accumulation of 2,000 hours time in service, and thereafter at intervals not to exceed 500 hours time in service, until all rivets are replaced with screws in accordance with the Requirement Document.The compliance time of the initial issue of this Directive was 31 October 1981. |\n|                | This Amendment becomes effective on 20 November 2008.                                                                                                                                                                                                                                                |\n| Background:    | Rivets were found to be “working” in the horizontal stabiliser forward spar web.Amendment 1 is issued to introduce a terminating action for the on-going repetitive inspections.                                                                                                                     |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n7 October 2008","sortOrder":0},{"sectionNumber":"AD/BEECH 90/62 Amdt 1","sectionType":"part","heading":"AD/BEECH 90/62 Amdt 1","content":"## AD/BEECH 90/62 Amdt 1","sortOrder":1},{"sectionNumber":"Horizontal Stabiliser ForwardSpar Web Ri","sectionType":"part","heading":"Horizontal Stabiliser ForwardSpar Web Rivets - Inspection","content":"## Horizontal Stabiliser Forward  \nSpar Web Rivets - Inspection","sortOrder":2},{"sectionNumber":"12/2008","sectionType":"part","heading":"12/2008","content":"## 12/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 introduces a terminating action—replacement of rivets with screws—to end the ongoing repetitive inspections. The affected population remains the same (F90 S/N LA-2 to LA-101); the change alters the compliance endpoint rather than expanding the fleet covered. (Background; Requirement)"},"complexity_factors":["Narrow applicability: limited to model F90 serial numbers LA-2 to LA-101 (Applicability).","Time-based repetitive inspections: initial compliance before 2,000 hours TIS, then at intervals not to exceed 500 hours TIS until terminating action (Compliance).","Terminating action specified: replacement of all rivets with screws to end inspections, requiring conformity with Beechcraft Service Instruction 1192 (Requirement; Background).","Dependency on external technical document: mandated work must be done in accordance with Beechcraft Service Instruction 1192 (Requirement).","Regulatory continuity: amendment records prior compliance date and sets an effective date, affecting record-keeping and retrospective compliance tracking (Compliance)."],"plain_english_summary":"Requires inspections of the horizontal stabiliser forward spar web rivets on Beechcraft F90 aeroplanes (S/N LA-2 to LA-101). The first inspection must occur before 2,000 hours time in service and then every 500 hours until all rivets are replaced with screws as set out in Beechcraft Service Instruction 1192. Owners/operators pay for inspections and replacement; the amendment adds a terminating action (replace with screws) and became effective 20 November 2008. (Requirement; Compliance; Background)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment stays within the original scope of the Airworthiness Directive. It does not expand applicability to new aircraft models or introduce new types of defects. It simply adds a terminating action (the screw replacement option) to the existing inspection regime, which is a natural evolution of the original safety measure rather than scope creep."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined applicability criterion (specific serial number range)","Single cross-reference to external technical document (Beechcraft Service Instruction 1192)","Simple conditional logic: inspect at defined intervals OR perform terminating action","No nested exceptions or complex definitional sections","Clear, unambiguous compliance timeline"],"plain_english_summary":"This AD requires owners/operators of Beechcraft King Air F90 (serials LA-2 to LA-101) to inspect rivets in the horizontal stabiliser forward spar web—initially before 2,000 flight hours and then every 500 hours—because working rivets could threaten structural integrity.  \n\nIt also provides a terminating action: replacing all rivets with screws per Beechcraft Service Instruction 1192, ending the repetitive inspections and reducing long‑term maintenance burden."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-62-amdt-1-horizontal-stabiliser-forward-spar-web-rivets-inspection","history":"/api/acts/ad-beech-90-62-amdt-1-horizontal-stabiliser-forward-spar-web-rivets-inspection/history","analysis":"/api/acts/ad-beech-90-62-amdt-1-horizontal-stabiliser-forward-spar-web-rivets-inspection/analysis","conflicts":"/api/acts/ad-beech-90-62-amdt-1-horizontal-stabiliser-forward-spar-web-rivets-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-62-amdt-1-horizontal-stabiliser-forward-spar-web-rivets-inspection/important-cases","documents":"/api/acts/ad-beech-90-62-amdt-1-horizontal-stabiliser-forward-spar-web-rivets-inspection/documents"}}