As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK ILLUMINATED ON RECALL PRIOR TO TOP OF DESCENT AND EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 21-53 TASK 821 R PACK LIGHT IS ON DURING MASTER CAUTION RECALL, NO FAULTS FOUND, GROUND VERIFICATION CHECKS GOOD. THIS CLEARS MEL 21-32B.