As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEADING EDGE SLAT ASYM EICAS MESSAGE DURING FLAP EXT FOR TAKEOFF. BITE TESTED PSEU. FAULTED TARGET 303 ON 9 SLAT INBOARD END. FOUND TARGET AND BOLT MISSING. REPLACED MISSING PARTS. CLEARED PS CYCLED FLAPS AND SLATS. NO MESSAGES APPEARED. SYSTEM CHECKS GOOD AT THIS TIME.