AD/ECUREUIL/99 Amdt 1 - Lateral Cargo Hold Doors

This airworthiness directive requires operators of Eurocopter EC 130 B4 helicopters fitted with one or two lateral cargo hold doors (unless modified by MOD 073542 or already compliant with SB No.52‑005) to key‑lock the centre lock on both left and right cargo doors before each flight, following Eurocopter Alert Service Bulletin No. 04A001 (Requirement; Applicability). Operators or their maintenance organisations must perform this recurring pre‑flight action and bear any costs; the amendment clarifies which aircraft are covered and converts the original alert into a service bulletin without changing the technical fix (Background; Compliance).