Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Security
Aircraft
FD (Flight Deck) door became jammed when CA (Captain) came out to use the lav & would not open. CA had me remove the pin from the inside; he had to rip the door open to gain access to FD. We propped door up in the opening & to ensure it stayed in place for landing I took the beverage 1/2 cart; placed it sideways; with brake on; against the door. The CA was aware & agreed with this decision. We landed safely & without incident.
E170 flight crew reported Flight Deck door malfunctioning in flight.