As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2291 - CAE-CLT - AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKEOFF FROM CAE. FLIGHT RETURNED TO CAE WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND FORWARD BAY SERVICE PANEL DOOR WAS UNLOCKED. MECHANIC LOCKED THE DOOR. THE FLIGHT PROCEEDED TO CLT WITH NO PROBLEMS. (M)