A321
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 22000
Human-Machine Interface; Confusion
Aircraft Equipment Problem Less Severe
Aircraft Aircraft Damaged
Aircraft; Human Factors; Procedure
We ferried an aircraft to ZZZ. We noticed that the galley carts were still on the aircraft and checked and secured them. Upon arrival to ZZZ; the FO made an uneventful landing; and when he applied the brakes; a galley cart; that had somehow become unsecured; rolled all the way from the back without hitting anything; made the slight jog to the left at the front; and then crashed through the flight deck door; causing considerable damage to the door and surrounding area. It is a mystery to both of us; as to how that cart became unsecured; and how it managed to make it all the way down the aisle and through the door. We feel fortunate that neither one of us was injured in this situation.
A321 pilot reported that a galley cart crashed through the flight deck door when brakes were applied during landing.