As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AT FL 350 WITH DELTA P 8 PSI WHEN OPEN FLIGHT DECK DOOR WILL NOT OPEN, FLIGHT DECK DOOR WILL NOT CLOSE AND LATCH WITHOUT EXTREME FORCE OR MANUAL TURNING OF LATCH. MAINTENANCE PRESSURIZED TO 8.0 FOUND DOOR TOP HEADER PANEL LOOSE AND SHIFTING. MAINTENANCE ADJUSTED PER AMM 52-51-00-820-810-A, PRESSURIZED TO 8.0 AGAIN AND ALL OK PER AMM 05-53-00-780-002-A01.