As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS-FORWARD TRIM AIR VALVE NOT RESPONDING APPROPIATELY TO SWITCH POSITION. TEMP IN CABIN HOT WITH FULL COLD SET. PREVIOUSLY WRITTEN UP, NO CHANGE. REMOVED AND REPLACED TEMPERATURE SELECTOR PER AMM 21-63-11-000-001-A (21315 3/8/24. PENDING OPS CHECK. PERFORMED OPS CHECK OF CAB TEMP CONTROL PER AMM 21-63-00-710-004-A, TEST OK. OK FOR SVC