pressure ratio controller

proportional–integral–derivative controller (PID controller / three-term controller)

terminal attack controller (TAC) (= forward air controller)

reduction ratio / gear ratio

Voltage Standing Wave Ratio (VSWR) / voltage standing-wave ratio

jam to signal ratio (J/S ratio)

differential pressure controller

base pressure ratio

engine pressure ratio (EPR)

pressure ratio

reference pressure ratio

compressor pressure ratio (CPR)

air controller

controller (exercises)

fighter controller

forward air controller (FAC)

Special Operations Terminal Attack Controller (SOTAC)

tactical air controller

joint terminal attack controller (JTAC)

forward air controller (airborne) FAC(A)

forward air controller party

ground-based forward air controller

heliborne forward air controller

brake controller

combat controller

Controller Interceptor Trainer (CIT)

fluid-operated controller

propeller speed controller

controller clearance

altitude controller

track controller

side-stick controller

controller