As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ON. ACFT GROUNDED. VERIFIED WITH FLT CREW THAT LIGHT EXTINGUISHED ON MASTER CAUTION RESET. PERFORMED BITE TEST OF BOTH CONTROLLERS IAW FIM TASK 21-61, TASK 801. NO FAULTS FOUND, GROUND VERIFICATION CK'S NORMAL. NO HISTORY PAST 30 DAYS.