A319
Flight Crew Air Transport Pilot (ATP)
Confusion; Distraction; Time Pressure
Aircraft Equipment Problem Critical
Aircraft Aircraft Damaged; Flight Crew Returned To Departure Airport; General Maintenance Action
Aircraft
On takeoff roll; n-1 on engine 2 vibration high; other parameters normal; no ECAM. Climb out n-1 vibration subsided. Climbing from FL360 to FL380 entire aircraft shuttered/vibrated then kabam. Everything nice. Engine 2 n1 vibration back to normal; but engine 2 fuel flow about 1;000 Pound Per Hour (PPH) over engine 1. Also; EGT engine 2 exceeded engine 1 by about 150 degrees. I conferred with dispatch/maintenance on a phone patch and decided to return to [departure airport]. I advised lead FA and then spoke to passengers. Return to [departure airport] uneventful. No ECAM presented itself. Preliminary inspection by mechanic that met us at gate indicated last turbine section of #2 engine was no longer there.
A319 Captain described an engine vibration that suddenly ceased; but included split engine parameters. Following a successful return to the field; Maintenance identified the loss of turbine blades.