{"id":"F2006B09400","name":"AD/ECUREUIL/99 - Lateral Cargo Hold Doors","slug":"ad-ecureuil-99-lateral-cargo-hold-doors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53747,"registerId":"commonwealth-F2006B09400-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\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 CASR 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\n![](image.001.png)  \n\nEurocopter AS 350 (Ecureuil) Series Helicopters","sortOrder":0},{"sectionNumber":"AD/ECUREUIL/99 Lateral Cargo Hold Doors ","sectionType":"part","heading":"AD/ECUREUIL/99 Lateral Cargo Hold Doors 7/2004","content":"# AD/ECUREUIL/99 Lateral Cargo Hold Doors 7/2004\n\nTX\n\nApplicability: All EC 130 B4 helicopters.\n\nRequirement: Key-lock the centre lock of the left and right lateral cargo hold doors in accordance with paragraph 1.E.2.a of Eurocopter EC 130 Alert Telex No. 04A001.\n\nNote: DGAC Emergency AD UF-2004-066 refers.\n\nCompliance: Prior to each flight after 14 May 2004.\n\nThis Airworthiness Directive becomes effective on 14 May 2004.\n\nBackground: During a flight test at the manufacturer’s facility, the centre lock of the lateral cargo hold door unlatched. Unlocking of the centre lock in flight, combined with aerodynamic loads, could lead to failure of the lateral lock and result in loss of the cargo hold door.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 13 May 2004\n\n![](image.001.png)","sortOrder":1}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1660},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope addressing the specific unsafe condition regarding cargo hold door locks on EC 130 B4 helicopters."},"complexity_factors":["Single, unambiguous applicability criterion (specific helicopter model only)","One concrete action required (key-locking specific door locks)","Short document with minimal cross-referencing (only one external technical document referenced)","Clear compliance timing (prior to each flight after fixed date)","No conditional exceptions or nested definitions"],"plain_english_summary":"This directive orders owners and operators of **EC 130 B4 helicopters** to take immediate safety action to prevent cargo doors from flying open during flight.\n\n**What you must do:**\nBefore every flight after 14 May 2004, you must engage the key-lock mechanism on the centre locks of both left and right side cargo hold doors, following the specific instructions in Eurocopter's Alert Telex No. 04A001.\n\n**Why this matters:**\nDuring testing, the centre lock on one of these doors opened by itself in flight. If this happens combined with wind pressure, the door could break off entirely, creating a serious safety hazard for people and property below.\n\n**Who this affects:**\nAnyone operating EC 130 B4 helicopters (also known as Eurocopter AS 350 Ecureuil series)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-99-lateral-cargo-hold-doors","history":"/api/acts/ad-ecureuil-99-lateral-cargo-hold-doors/history","analysis":"/api/acts/ad-ecureuil-99-lateral-cargo-hold-doors/analysis","conflicts":"/api/acts/ad-ecureuil-99-lateral-cargo-hold-doors/conflicts","importantCases":"/api/acts/ad-ecureuil-99-lateral-cargo-hold-doors/important-cases","documents":"/api/acts/ad-ecureuil-99-lateral-cargo-hold-doors/documents"}}