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. RIGHT PACK LIGHT EXTINGUISHED WHEN MASTER CAUTION WAS RESET. ACFT GROUNDED. ACCOMPLISHED BITE OF BOTH PTC, NR 1 HAD STANDBY PACK FAULT AND WOULD NOT RESET REF FIM 21-63, TASK 801 AND 802. REPLACED NR 1 PTC IAW AMM 21-61-20, OPS CHECKED NORMAL. ACCOMPLISHED BITE WITH NO FURTHER FAULTS, AFTER RUNNING PACK FOR 20 MINS. ALL GROUND FUNCTIONAL TESTS PASS.