As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT A/C PACK LIGHT ON RECALL AT T.O.D. ACFT GROUNDED. PERFORMED BITE CHECK OF NR 1 TEMP CONTROLLER, IAW FIM TASK 21-61-00-810-801, INDICATES FAILURE OF NR 1 TCV. REMOVED AND REPLACED TRIM MODULATING VALVE, IAW AMM 21-61-21. OPS CHECK GOOD. BITE CHECK NR 1 TEMP CONTROLLER, IAW FIM TASK 21-61-00-810-801 PASS.