Boeing 777

What is SOV on Boeing 777? (Shut-Off Valve)

What is HLCS on Boeing 777? (High Lift Control System)

What is PRSOV on Boeing 777? (Pressure Regulating Shut-Off Valve)

What is IOEU on Boeing 777? (Inboard Overhead Electronics Unit)

What is ETOPS on Boeing 777? (Extended Twin (Engine) Operations)

What is PMS on Boeing 777? (Performance Management System)

What is DH on Boeing 777? (Decision Height)

What is RA on Boeing 777? (Radio Altitude)

What is ADIRS on Boeing 777? (Air Data Inertial Reference System)