{"id":"F2006B04333","name":"AD/BELL 204/30 - External Load, Load Cell Link","slug":"ad-bell-204-30-external-load-load-cell-link","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44148,"registerId":"commonwealth-F2006B04333-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.002.png)\n\n![](image.002.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 CAR 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.","sortOrder":0},{"sectionNumber":"AD/BELL 204/30 External Load, Load Cell ","sectionType":"part","heading":"AD/BELL 204/30 External Load, Load Cell Link 8/2000","content":"# AD/BELL 204/30 External Load, Load Cell Link 8/2000\n\nApplicability: All Models 204B modified by Chadwick Inc. STC.s SH149WE and SH17NW.\n\nRequirement: Replace Chadwick load cell link assembly P/N 47-40200-19 with parts approved by the Authority.\n\nNote: FAA AD 78-21-02 refers.\n\nCompliance: Before further flight in any external load operation after the effective date.\n\nThis Airworthiness Directive becomes effective on 10 August 2000.\n\nBackground: This directive is issued following notification by the country of manufacture and is to prevent the possible use of the defective load cell in Australia. It also follows the re- introduction of the AD Series after sixteen years.\n\n![](image.003.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 6 July 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific defective part on specific modified aircraft. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 2 defined applicability criteria (specific aircraft model + specific modification STCs)","Single, unambiguous requirement with no exceptions or conditional branches","No cross-references to other legislation (only a note about related FAA directive)","Clear, fixed compliance date with simple trigger condition ('before further flight')","No interpretation section or defined terms"],"plain_english_summary":"CASA’s AD orders owners/operators of Bell 204B helicopters modified under Chadwick STCs SH149WE and SH17NW to stop external-load flying until a defective Chadwick load cell link assembly (PN 47-40200-19) is replaced with approved parts. It matters because faulty load cells can misread lift weights, risking overload and catastrophic failure during sling operations; compliance is required before the next external-load flight after 10 Aug 2000."},"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive keeps a narrow, technical scope: it targets a single component on specific STC‑modified Bell 204B helicopters and mandates replacement with Authority‑approved parts (Applicability; Requirement; Compliance). It implements the original safety objective stated in the Background (prevent use of a defective load cell) without expanding obligations beyond that remedy."},"complexity_factors":["Narrow applicability: only Bell 204B aircraft modified by Chadwick STCs SH149WE and SH17NW (Applicability).","Single mandated action: compulsory replacement of one part number (Requirement) reduces procedural complexity.","Immediate operational effect: compliance required before next external‑load flight, creating short‑term downtime and scheduling pressure (Compliance).","Approval dependency: replacement must use parts 'approved by the Authority', introducing procurement and certification steps under CASA discretion (Requirement).","Cross‑reference to foreign regulator: note refers to FAA AD 78‑21‑02, implying international coordination but possible differences in remedies (Note).","Regulatory reactivation context: issued after reintroduction of AD Series, which may affect administrative handling though not the technical remedy (Background)."],"plain_english_summary":"This airworthiness directive requires operators of Bell 204B helicopters fitted under Chadwick STCs SH149WE or SH17NW to replace a specific Chadwick load‑cell link assembly (P/N 47‑40200‑19) with parts approved by the aviation authority before any further external‑load flight. It responds to a notification from the country of manufacture and aims to prevent use of a potentially defective load cell."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-204-30-external-load-load-cell-link","history":"/api/acts/ad-bell-204-30-external-load-load-cell-link/history","analysis":"/api/acts/ad-bell-204-30-external-load-load-cell-link/analysis","conflicts":"/api/acts/ad-bell-204-30-external-load-load-cell-link/conflicts","importantCases":"/api/acts/ad-bell-204-30-external-load-load-cell-link/important-cases","documents":"/api/acts/ad-bell-204-30-external-load-load-cell-link/documents"}}