Boeing

What is YSM on Boeing 737? (Yaw Damper/Stabilizer Trim Module)

What is PSA on Boeing 737? (Power Supply Assembly)

What is APID on Boeing 737? (Airplane Identification)

What is VES on Boeing 737? (Video Entertainment System)

What is PWS on Boeing 737? (Predictive Windshear System)

What is ASCPC on Boeing 737? (Air Supply Cabin Pressure Controller)

What is RVDT on Boeing 737? (Rotary Variable Differential Transducer)

What is TRC on Boeing 737? (Thermatic Rotor Control)

What is PMS on Boeing 737? (Performance Management System)