As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DUCT BLOWN FORWARD OF BYPASS VALVE 10HH LEFT PACK NR 1. PACK PANEL STOWED IN POSITION REQUIRED INSTALLATION. MAINTENANCE REPLACED SEALS ON DUCT FROM ACM TO TURBINE BYPASS VALVE 10HH PER AMM 21-61-53 AND PERFORMED SATISFACTORY OPERATIONAL CHECK PER AMM 21-61-00.