Do aircraft fitted with both a trimmable horizontal stabilizer and a trim tab exist? This question is restricted to trim on the pitch axis.

Both trim tab and THS (trimmable horizontal stabiliser, a whole moving horizontal stabilizer whose movements are used as trim) are used to trim an aircraft. Aircraft having a larger speed range (e.g. jet airliners) tend to be fitted with THS whereas aircraft flying slowlier (e.g. GA aircrafts) tend to be fitted with trim tab.

Is there any aircraft type that use both? (Maybe one being a backup device)
Trimmable horizontal stabilizer (THS) and trim tab serve the similar purpose for two entirely different control architectures:


Trim tab neutralizes the force on the pitch control for a reversible control system.
THS neutralizes the pitch position (and, in the process, the force) for an irreversible control system (e.g. hydraulically/electromechanically actuated, analog or digitally commanded).


In the presence of an irreversible actuator, the actual hinge moment on the elevator no longer matters since the elevator position is being closed-loop controlled by the actuator (provided the actuator is sized correctly, of course); but more importantly, it is no longer felt directly by the pilot. Without this direct feel, a trim tab would be more than useless.

On the other hand, in the case of reversible control with direct elevator-to-stick linkage, deflecting the stabilizer would not allow the dual objective of maintaining trim and neutralizing hinge moment to be accomplished, since a TE up stabilizer would impart even more nose down stick force to the stick. The THS is equally useless for a reversible control for this purpose.

For this reason, I would be very surprised to see an aircraft fitted with both. But maybe there are oddballs?