As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLAP RETRACTION, FLAP INDICATION SHOWED NR 7 LEADING EDGE SLAT WOULD NOT RETRACT AT 2 DEGREES. AIRCRAFT RETURNED TO BWI AND LANDED WITHOUT INCIDENT. REPAIRED SHORTED WIRE AFT OF NR 7 SLAT. PLACED FORWARD PANEL INDICATION FLAP/SLAT LEADING EDGE SYSTEM ON MEL.