As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, DOOR L1 PRESSURIZATION LIGHT WAS FLASHING INDICATING DOOR WAS NOT PRESSURIZING. FAP ALSO SHOWED L1 DOOR WAS NOT ARMED, DESPITE LEVER BEING IN ARMED POSITION. ( CABIN PRESSURE LIGHT (ON DOORS) )-REFER. LOG PAGE 2486499-1 FOR CORRECTIVE ACTION . THIS CLEARS DMI # 2486496-1. MOC NOTIFIED LOG UPDATED AND PLACARD REMOVED