As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1524, LAX-JFK. (ETOPS) ' COND TRIM AIR SYS FAULT - CKPT TRIM VALVE ( COCKPIT/CABIN TRIM AIR VALVES ); ITEM ALREADY PLACED ON MEL LIST REF TO MDDR 518832. PERFORMED BITE TEST OF TEMP CTL SYS. FOUND NO PREVIOUS OR PFR OF FAULTS. OK REF TSM 21-63-00-710-057-B. MDDR CLEARED. MX-4 UPDATED. PLACARD REMOVED.