As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 8037 - EWR - PACK NR 1 INOPERATIVE MESSAGE ON THE EICAS FOLLOWED BY PACK NR 2 APPROXIMATELY ONE MINUTE LATER. BOTH PACKS RESET AND WORKED FINE ON THE GROUND. MAINTENANCE PERFORMED AN INSPECTION AND FOUND THAT THE NR 2 PACK CLAMP CAME OFF FROM THE DUCT. REINSTALLED THE DUCT AND OPS CHECKED SYSTEM WITH NO OTHER DEFECTS/FAULTS NOTED.