EASA AD 2023-0148R1
Main Rotor Drive – Main Gearbox – Replacement; Placards and Markings – ENG1 Training Idle Switch – Installation / Operational Restriction
EASA Airworthiness Directive 2023-0148R1 is issued for Airbus Helicopters EC 225 LP models addressing issues with the main rotor drive main gearbox (MGB) and installation of placards related to the ENG1 Training Idle switch. It applies to specific MGB part numbers and configurations that have shown wear and broken roller cages, potentially reducing engine power transfer capability during one engine inoperative (OEI) conditions. The directive mandates inspections, replacements, placard installations, and operational restrictions to ensure continued airworthiness and safe helicopter operation.