As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: IN FLIGHT, FLIGHT DECK DOOR IS VERY DIFFICULT TO OPEN. MAINTENANCE FOUND THE DOOR BINDING AT THE AFT FACING UPPER RIGHT AREA. ADJUSTED CLEARANCE "C" PER AMM 52-51-00-820-806-A. AND ACCOMPLISHED A SATISFACTORY FUNCTIONAL TEST OF DOOR OPENING PER AMM 52-51-00-720-001-A.