What was found
AIRCRAFT WAS GROUNDED: ON TAKE OFF ROLL, POWER WAS SET TO 40% N1 FOR ENGINE STABILIZATION, THEN ADVANCED TO TAKE OFF POWER. A MOMENT LATER, TAKE OFF CONFIGURATION WARNING SOUNDED AND TAKE OFF WAS ABORTED. ABORT WAS LOW SPEED. AFTER CLEARING RUNWAY, NOTED FLAP ASYMMETRY (LEFT FLAP WAS BELOW FLAPS 5 INDEX). ALSO, MACH TRIM FAIL LIGHT CAME ON AND MANAGEMENT COMPUTER AND FLIGHT CONTROL ANNUNCIATOR LIGHTS WERE ILLUMINATED. REMOVED AND REPLACED LEFT (AALA202105269012) AND RIGHT FLAP POSITION TRANSMITTERS PER AMM 27-58-01, ALL REQUIRED TESTS CHECK GOOD. ALSO REPLACED INTEGRATED FLIGHT SYSTEMS ACCESSORY UNIT (AALA202105279004) PER AMM 22-11-37.