What was found
GEG - ABORTED TAKEOFF - FLT 0301 - ON TAKEOFF ROLL AT GEG EN ROUTE FOR PHX TAKEOFF CONFIGURATION HORN SOUNDED, REJECTED TAKEOFF BELOW 80 KNOTS, TAKEOFF THRUST NOT SET. RECONFIGURED TAKEOFF FLAP HANDLE, SPEED BRAKES, AND STAB TRIM; DEPARTED WITHOUT FURTHER EVENT.