As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, CLEAN CONFIGURATION, LE SLAT ASYM EICAS MSGACOMPLISHED QRH PROCEDURE. AIRCRAFT LANDED WITH ZERO SLATS AND 20 DEG FLAPS. 173 KT LANDING SPEED. REPLACED S279 PROX SENSOR. CHECKS OK. PERFORMED HIGH ENERGY STOP INSPECTION NO DEFECTS.