As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED DURING DESCENT, MASTER CAUTION RESET. LIGHT EXTINGUISHED. ACFT GROUNDED. REMOVED AND REPLACED RIGHT PACK TCV IAW AMM 21-51-10-000-801, AND AMM 21-51-10-400-801 UP TO PAR 3 E. (2). RIGHT PACK BITES GOOD. PERFORMED LEAK CHECK OF THE RT TEMP CONTROL VALVE, LEAK CHECKED GOOD IAW AMM 21-51-10. VERIFIED RIGGING AND OPS TEST OF RT RAM AIR INLET ACTUATOR, NO DEFECTS NOTED IAW AMM 21-51-21.