A321
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Situational Awareness
Aircraft Equipment Problem Critical
Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed
Aircraft
Climbing through 25;000 feet; we experienced major airframe vibration. The First Officer was the Pilot Flying and disconnected autopilot and autothrust; reduced power; until vibration subsided. (Around 300 KIAS) I decided to return to ZZZ. We did not exceed 250 knots for the remainder of the flight and no more vibration occurred. Submitted vibration form and made entry into the Maintenance Log. I was unable to look at the flight control page during the event; but suspected it may have had been associated with the elevator based on the vibration sensation being somewhat vertical.
A321 Captain reported major airframe vibration on climbout.