What was found
HARD TO CONTROL COCKPIT, FWD CABIN, AND AFT CABIN TEMP. TROUBLESHOT PER FIM 21-60-00 PG130. REPLACED TRIM AIR MODULATOR VALVE PER MM 21-61-07.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
HARD TO CONTROL COCKPIT, FWD CABIN, AND AFT CABIN TEMP. TROUBLESHOT PER FIM 21-60-00 PG130. REPLACED TRIM AIR MODULATOR VALVE PER MM 21-61-07.