As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT DECK DOOR STICKS AND IS DIFFICULT TO OPEN. MAINTENANCE FOUND THE DOOR LATCH DIRTY AND STICKY. MAINTENANCE CLEANED AND LUBRICATED THE DOOR LATCH PER AMM 52-51-00. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.