{"id":"F2006B09377","name":"AD/ECUREUIL/73 - SIREN Cargo Hooks","slug":"ad-ecureuil-73-siren-cargo-hooks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53674,"registerId":"commonwealth-F2006B09377-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 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.\n\nEurocopter AS 350 (Ecureuil) Series Helicopters","sortOrder":0},{"sectionNumber":"AD/ECUREUIL/73 SIREN Cargo Hooks 3/2002 ","sectionType":"part","heading":"AD/ECUREUIL/73 SIREN Cargo Hooks 3/2002 DM","content":"# AD/ECUREUIL/73 SIREN Cargo Hooks 3/2002 DM\n\nApplicability: Model AS 350 B3 helicopters fitted with SIREN cargo hooks part number AS-21-5-7.\n\nRequirement: 1. Cargo hooks part number AS-21-5-7 with amendment B:\n\nAction in accordance with paragraph 2.B of Eurocopter Alert Telex No. 05.00.39.\n\n    2. Cargo hooks part number AS-21-5-7 without amendment B:\n\n    Action in accordance with paragraph 2.A of Eurocopter Alert Telex No. 05.00.39.\n\n    b. Action in accordance with paragraph 2.B of Eurocopter Alert Telex No. 05.00.39.\n\nNote: DGAC AD 2002-044(A) refers.\n\nCompliance: 1. Before the next flight after 6 February 2002, and before the first flight of the day with underslung load.\n\n    2.a. Before the next flight with underslung load after 6 February 2002.\n\n    2.b. Before the first flight of the day with underslung load.\n\nThis Airworthiness Directive becomes effective on 6 February 2002.\n\nBackground: The DGAC requires certain actions to prevent inadvertent cargo load release due to cargo hook locking catch corrosion combined with in-flight vibrations.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 30 January 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 6 February 2002.","sortOrder":1}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific corrosion defect in a specific cargo hook model on a specific helicopter type. There is no evidence of scope creep; it is a targeted safety intervention for a defined unsafe condition."},"complexity_factors":["Short, single-purpose directive (approximately 300 words)","Only 1 defined applicability criterion (specific helicopter model + specific part number)","Simple conditional structure: two variants based on presence/absence of 'amendment B'","Cross-reference to external document (Eurocopter Alert Telex No. 05.00.39) — the actual technical instructions are not reproduced in the AD itself","Minor formatting irregularities in the source text (duplicate headings, image placeholders)","No nested exceptions or complex temporal calculations beyond simple date thresholds"],"plain_english_summary":"This AD orders operators of Eurocopter AS350 B3 helicopters fitted with SIREN cargo hooks (P/N AS-21-5-7) to inspect and correct corrosion on the hook locking catch to prevent underslung loads from dropping. Action is required before the next underslung-load flight (and thereafter before the first daily flight with such loads); there's a slightly different inspection/fix sequence depending on whether the hook incorporates amendment B. This is mandatory to prevent dropped loads and related injury, damage, or loss of control."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument's applicability and requirements are stated for AS350 B3 helicopters fitted with SIREN cargo hooks P/N AS-21-5-7; the text does not indicate any expansion or narrowing of that stated scope relative to the AD itself. The AD references DGAC AD 2002-044(A) and Eurocopter Alert Telex No. 05.00.39 for technical detail but contains no language purporting to change the original applicability set out in this directive (Applicability; Requirement; Note)."},"complexity_factors":["Narrow applicability to a single helicopter model and a specific part number (Applicability).","Requirements are implemented by reference to an external technical document (Eurocopter Alert Telex No. 05.00.39), creating dependency on that document for precise actions (Requirement).","Different actions depending on hook amendment status (distinguishes hooks with or without amendment B) (Requirement).","Short, operationally disruptive compliance deadlines—before next flight with an underslung load or before first flight of the day—raising immediate scheduling and readiness implications (Compliance).","Potential need for inspection, repair or replacement work as directed by the Alert Telex, which imposes direct costs on operators (Requirement; Background).","Reference to a foreign authority directive (DGAC AD 2002-044(A)) increases cross-jurisdictional technical alignment requirements (Note).","Enforcement discretion is limited: the CASA delegate issues the AD under CAR 1998 subregulation 39.1(1), leaving little room for delayed or alternative compliance approaches (preamble)."],"plain_english_summary":"This Airworthiness Directive (AD) requires operators of Eurocopter AS350 B3 helicopters fitted with SIREN cargo hooks (P/N AS-21-5-7) to carry out the inspections and corrective actions set out in Eurocopter Alert Telex No. 05.00.39 (use paragraph 2.A or 2.B as applicable). The AD’s stated purpose is to prevent inadvertent cargo release due to cargo hook locking-catch corrosion combined with in-flight vibrations; compliance is immediate (before next flight with an underslung load or before the first flight of the day)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-73-siren-cargo-hooks","history":"/api/acts/ad-ecureuil-73-siren-cargo-hooks/history","analysis":"/api/acts/ad-ecureuil-73-siren-cargo-hooks/analysis","conflicts":"/api/acts/ad-ecureuil-73-siren-cargo-hooks/conflicts","importantCases":"/api/acts/ad-ecureuil-73-siren-cargo-hooks/important-cases","documents":"/api/acts/ad-ecureuil-73-siren-cargo-hooks/documents"}}