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 MASTER CAUTION RECALL, EXTINGUISHED WHEN RESET. ACFT GROUNDED. RT PACK TCV FAILED BITE TEST IAW AMM 21-61-00-700-806-002 ON NR 2 CONTROLLER. REMOVED AND REPLACED THE RT PACK TCV IAW AMM 21-51-10. LEAK CHECKED AND GROUND VERIFICATION TESTED GOOD.