What was found
AFTER TAKEOFF, FLAPS WOULD NOT RETRACT TO THE FULL UP POSITION, TWO SEGMENTS OUTBOARD, ONE SEGMENT NACELLE, ONE SEGMENT INBOARD, FOUR FLAP DISAGREEMENT INDICATION. CLEANED FLAP TRACK AND ROLLERS. REMOVED AND REPLACED FLAP CONTROL UNIT WITH SERVICEABLE UNIT. OPERATED FLAPS NUMEROUS TIMES AND OPS CHECKS GOOD.