EASA Regulations for MBB-BK117 C-1

Air Conditioning – Vapor Cycle Air Conditioning System – Inspection

EASA Airworthiness Directive 2026-0152 is an airworthiness directive addressing the vapor cycle air conditioning system on MBB-BK117 C-1 helicopters. It mandates recurring inspections of the louver box assembly, part number 117-820014, due to a reported in-flight detachment caused by incorrect installation. The directive applies to all serial numbers of the affected helicopter model and aims to prevent potential in-flight loss of parts and reduced helicopter control.