As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1124, LAX-JFK. (ETOPS) 'COCKPIT TRIM AIR VALVE FAULT ( COCKPIT/CABIN TRIM AIR VALVES );REPLACED HOT AIR PRESSURE SWITCH (26HK) IAW AMM 21-63-19. OPS TEST OF THE COCKPIT AND CABIN TEMP CONTROL OK. THIS CLEARS THE MDDR. MX-4 UPDATED. PLACARD REMOVED.