As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN BOARDING DOOR UNABLE TO OPEN FROM INSIDE, HAD TO BE OPENED FROM OUTSIDE. AIRCRAFT WAS NOT PRESSURIZED. CLEANED DEBRIS OUT OF TRACK AND CLEANED AND LUBED PINS AND HOOKS. REF AMM 52-11-00. ACFT MAIN ENTRY DOOR OPS CHECK NORMAL. ACFT OK FOR SERVICE.