As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLATS NR 2, 3, 6 AND 7 WOULD NOT RETRACT WHEN FLAP 2 DEGREES SELECTED FROM 5 DEGREES. NR 4 SLAT TRANSITION LIGHT DID NOT ILLUMINATE DURING RETRACTION. RETURNED TO ORD. *S/D* REPLACED LEADING EDGE POSITION CONTROL UNIT, OPERATIONAL CHECK NORMAL.