As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 830 - PHL - AIRCRAFT WOULD NOT PRESSURIZE DUE TO LARGE LEAK ON LEFT SIDE FORWARD ENTRY DOOR. MAINTENANCE COULD NOT DUPLICATE THE PROBLEM. FOUND THAT THE FORWARD ENTRY DOOR WARNING LIGHT AND DOOR OPERATED NORMAL. PRESSURE CHECK WAS GOOD. (M)