As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF OUT OF MIA, NR 2 SLAT LEADING EDGE DEVICE WOULD NTO RETRACT. FOLLOWED EMERGENCY PROCEDURES PER AOM. PILOT DID AIR TURN BACK TO MAI. FOUND CANNON PLUG OFF OF NR 2 SLAT ACTUATOR, CLEANED AND RECONNECTED CANNON PLUG. OPS CHECK OK PER MM 27-81-0. (M)