As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL, NR 2 PACK LIGHT ILLUMINATED. LIGHT RESETS WITH MASTER CAUTION. ACFT GROUNDED. BITE OF NR 2 ZONE TEMP CONTROLLER SHOWS TCV FAULT. FAULT CLEARS AND BITE TESTED GOOD IAW AMM TASK 21-61-20-400-801. GROUND VERIFICATION TEST GOOD.