As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS-CLT - FLT 1524 - ON ROTATION, THE ARICRAFT WOULD NOT PRESSURIZE. THE AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE FORWARD 2 ACCESSORY HATCH LOCK ARMS UNSNAPPED. THE LOCKS WERE SECURED AND ALL CHECKED NORMAL. (M)