As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT PACK CAUTION LIGHT ILLUMINATED ON MASTER CAUTION CHECK AT TOP OF DESCENT. CANCELLED WITH MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED BITE AMM 21-61-00-700-806-002. NO FAULTS FOUND, LIGHT DOES NOT ILLUMINATE DURING MASTER CAUTION CHECK. ACFT OK FOR SERVICE.