As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS, LEADING EDGE SLAT DISAGREE QRH FOLLOWED. EICAS WENT AWAY BEFORE PROCEDURE COMPLETE. NO YAW OR VIBRATION. REMOVED AND REPLACED FSEU IAW AMM 27-51-01. TEST GOOD PER AMM 27-51-01. FOUND SENSOR M549 OUT OF LIMITS, ADJUSTED RVDT IAW AMM 27-81-11. OK FOR SERVICE.