A320
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Total 19000
Time Pressure; Troubleshooting; Workload
Aircraft Equipment Problem Critical
Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; General Maintenance Action
Aircraft
Climbing out at around 20;000 ft we experienced a thump like we hit something. I thought it was on my side of the aircraft and the Captain thought it was on his side of the aircraft. We discussed what it might be; too high for a bird strike; maybe a panel came off; slight roll back on one of the engines; etc. We checked all systems throughout the flight and every system was normal. We sent Maintenance a message to inspect the aircraft when we arrived in ZZZ. For the next 2 or so hours all indications remained normal. Smooth flight; good weather; nice east flight. We then began our descent into ZZZ; power on slow descents; idle descents; everything remained normal. I was flying the aircraft and the Captain was the PM (Pilot Monitoring). CA (Captain) continued to check the systems throughout the descent. On downwind; we were given a clearance to descend to 4000 feet. I used open descent which is an idle descent because I thought it might be a short final approach. When the # 2 engine came to idle; the vibration started and from that time it stayed at idle. We saw a N1 vibration on the lower ECAM at one time of 9.9. CA immediately called and [advised ATC] and asked for priority. We were landing on XXL and the tower offered XXC so we took [it]. We proceeded on downwind and turned on an 8 to 10 mile final. Tower got us on the ground quick. CA asked if I was comfortable landing the aircraft and I replied yes and continued. We landed the aircraft and rolled to a stop close to where the fire trucks were. During the rollout; we got an ECAM message that the engine failed and tower called and said we had fire coming out the tail pipe. At the end of the roll out CA took the aircraft came to a stop and set the parking brake. He then called for the evacuation checklist so we would be ready because by that time we were already talking to Fire Rescue who had pulled up several trucks and were hosing down the right engine. We never got any kind of fire indication on the FLT deck. They told us not to evacuate. We stayed on the runway for about an hour while Fire Rescue and maintenance made the decision on what to do with the aircraft and passengers. They brought out a super tug and towed us to a gate. This is about the best I can do to describe what happened. During the evacuation checklist; CA did blow the fire bottle on the #2 engine as Fire Rescue was approaching but he elected not to blow a bottle on the #1 engine which was fine by me since nothing was wrong with it; Fire Rescue was approaching; and he had not given the evacuation command.
A320 First Officer reported problems with the #2 engine; including significant vibration indication; engine failure ECAM and visible flames from the tailpipe during landing roll.