What was found
AFTER TAKEOFF FROM ORB WHILE RETRACTING FLAPS FROM 5 DEGREES TO 2 DEGREES NR 4 LEADING EDGE DEVICE FAILED TO RETRACT. ACCOMPLISHED APPROPRIATE CHECKLIST, CONTACTED EXPRESS ONE DISPATCH AND WAS DIRECTED TO CPH. GENERATED FROM PILOT REPORT. REMOVED AND REPLACED ACTUATOR AND SWITCH ON NR 4 SLATS, OPS CHECK GOOD IAW MM 27. (M)