Maintenance Airframe; Maintenance Powerplant
Communication Breakdown; Situational Awareness
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Aircraft; Human Factors; MEL; Procedure
Company Maintenance Control was contacted by ZZZ Line Maintenance; stating #2 Engine Thrust Reverser outboard reverser actuator return line was leaking. They were instructed to [decommission] the Reverser per MEL 78-31-00 and; if need be; to keep fluid from draining onto the engine; to cap the fitting at the firewall. ETOPS aircraft.
A Maintenance Controller reports that he instructed Line Maintenance personnel at Station ZZZ to decommission the #2 Engine Thrust Reverser per MEL 78-31 on a B757-200 ETOPS aircraft by capping the hydraulic actuator return line fitting at the engine firewall.