As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF UPON FLAP/SLAT RETRACTION THE LEADING EDGE SLATS LOCKED OUT. TROUBLESHOOTING PER MAINTENANCE MANUAL AND BOEING SERVICE BULLETIN, FOUND NUMBER 1 AND NUMBER 8 LEADING EDGE SLAT ACTUATORS BYPASSING. REPLACED BOTH ACTUATORS PER M/M, OPERATIONAL CHECKS OK.