As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#2288, JFK-AMS. (ETOPS) 'ON TAXI OUT COND TRIM AIR SYS FAULT COCKPIT TRIM AIR VALVE ( HOT AIR PRESS REGUL VLV - N703 AND UP, OPEN POSITION; REMOVED AND REPLACED TRIM AIR VALVE 11HK IAW AMM 21-63-51.OPS CHECK GOOD. THIS CLEARS MDDR MX-4 UPDATED. PLACARD REMOVED. MCC NOTIFIED