What specific operational phase commonly employs beta mode in turbine engines?

The taxiing phase is the specific operational phase that commonly employs beta mode in turbine engines. In this mode, the engine is able to produce thrust while allowing for lower power settings, which is ideal for ground operations. This is particularly useful during taxiing, as it enables pilots to control the aircraft's movement more precisely without the need for high power settings, which can be inefficient and potentially hazardous on the ground.

When in beta mode, the fuel control system adjusts the engine's power output to maintain optimal performance during slow speeds, which is essential during taxi to ensure the aircraft does not move too quickly while still providing the necessary thrust to maneuver effectively. This operational characteristic of beta mode focuses on fine-tuning thrust management in a manner that directly supports ground operations, making it vital for the taxiing phase of flight.