As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT TOP OF DESCENT THE LEFT PACK LIGHT ILLUMINATED ON RECALL-CLEARED WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED LT RAM AIR EXHAUST ACTUATOR PER AMM 21-51-21-000-801. RAM AIR INLET ACTUATOR TEST PERFORMED WITH BITE TEST OF THE PACK/ZONE TEMP CONTROLLER REF TASK 21-61-00-700-806-002. OPS CHECK GOOD.