{"id":"F2008L04433","name":"AD/RES/23 Amdt 1 - Davis FDC-6400B Series Safety Belts","slug":"ad-res-23-amdt-1-davis-fdc-6400b-series-safety-belts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76430,"registerId":"commonwealth-F2008L04433-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Restraint Equipment","sectionType":"division","heading":"Restraint Equipment","content":"### Restraint Equipment\n\n| AD/RES/23 Amdt 1 | Davis FDC-6400B Series Safety Belts | 13/2008 |\n| ---------------- | ----------------------------------- | ------- |\n\n| Applicability: | All Davis FDC-6400B series safety belts with part numbers listed in Requirement document.                                                                                                                                                                                                        |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Remove from service all safety belts listed in Davis Aircraft Products SB No. 1 and replace with an approved safety belt.Note 1: The removed belt may be modified by replacing the adapter in accordance with the Davis Service Bulletin.Note 2: FAA AD 89-09-02. Amdt 39-6102 refers.           |\n| Compliance:    | Within 100 hours time in service after 10 August, 1989 or at the next scheduled inspection for Maintenance Release issue after 10 August 1989 whichever is later.                                                                                                                                |\n|                | This Amendment becomes effective on 18 December 2008.                                                                                                                                                                                                                                            |\n| Background:    | Davis has received reports of cracks in the buckle cover latch. Potential exists for the buckle release mechanism to jam under emergency evacuation conditions.This amendment corrects the title reference.The original issue of this Airworthiness Directive became effective on10 August 1989. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n6 November 2008","sortOrder":0},{"sectionNumber":"AD/RES/23 Amdt 1","sectionType":"part","heading":"AD/RES/23 Amdt 1","content":"## AD/RES/23 Amdt 1","sortOrder":1},{"sectionNumber":"Davis FDC-6400B Series Safety Belts","sectionType":"part","heading":"Davis FDC-6400B Series Safety Belts","content":"## Davis FDC-6400B Series Safety Belts","sortOrder":2},{"sectionNumber":"13/2008","sectionType":"part","heading":"13/2008","content":"## 13/2008","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 amendment is purely administrative — it corrects a title reference in the original 1989 directive. The scope remains exactly as originally intended: addressing a specific mechanical defect in specific safety belt models. No expansion of scope has occurred."},"complexity_factors":["Very short document (approximately 200 words)","Only 1 defined applicability criterion (specific part numbers)","Single requirement with 2 straightforward alternatives (replace OR modify)","Simple compliance timeline (100 hours or next inspection)","No nested exceptions or conditional logic","Minimal cross-referencing (only 1 external FAA document and 1 service bulletin)","Clear, direct language with no technical legal terminology"],"plain_english_summary":"This AD mandates removing specific Davis FDC-6400B series aircraft safety belts because a cracked buckle cover latch can jam and prevent rapid release during an evacuation. Affected aircraft operators and maintenance organizations must replace the belts with approved assemblies or modify them per the manufacturer’s service bulletin. It’s a life‑safety order tied to the FAA AD (original Aug 1989; amendment effective 18 Dec 2008) with a 100‑flight‑hour/compliance‑inspection window."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The amendment corrects the title reference to an existing Airworthiness Directive; the substantive requirement—to remove and replace specified Davis FDC-6400B belts (or modify the adapter per the Service Bulletin) within the stated compliance window—reflects the original AD effective 10 August 1989 and is not expanded by this amendment (Background; Requirement; Compliance)."},"complexity_factors":["Narrow applicability to specific Davis FDC-6400B part numbers (Applicability)","Single, mandatory corrective action: remove and replace with an approved safety belt (Requirement)","Permitted alternative compliance by adapter replacement per Davis Service Bulletin (Requirement, Note 1)","Compliance timing ties to a historical benchmark (100 hours after 10 August 1989 or next scheduled inspection), which may complicate retrospective compliance tracking (Compliance)","Cross-reference to FAA AD 89-09-02 introduces inter-jurisdictional reference and potential for differing standards (Requirement, Note 2)","Amendment framed as a corrective administration (title correction) rather than substantive change, limiting scope complexity (Background / Effective date)"],"plain_english_summary":"This Airworthiness Directive amendment requires operators to remove Davis FDC‑6400B series safety belts listed in the requirement and replace them with an approved safety belt (or modify the removed belt by replacing the adapter per the Davis Service Bulletin). It applies to aircraft fitted with those part‑numbered belts and must be complied with within 100 hours time‑in‑service after 10 August 1989 or at the next scheduled inspection after that date. The action responds to reports of cracks in the buckle cover latch that could jam the release."}},"importantCases":[],"_links":{"self":"/api/acts/ad-res-23-amdt-1-davis-fdc-6400b-series-safety-belts","history":"/api/acts/ad-res-23-amdt-1-davis-fdc-6400b-series-safety-belts/history","analysis":"/api/acts/ad-res-23-amdt-1-davis-fdc-6400b-series-safety-belts/analysis","conflicts":"/api/acts/ad-res-23-amdt-1-davis-fdc-6400b-series-safety-belts/conflicts","importantCases":"/api/acts/ad-res-23-amdt-1-davis-fdc-6400b-series-safety-belts/important-cases","documents":"/api/acts/ad-res-23-amdt-1-davis-fdc-6400b-series-safety-belts/documents"}}