How many crew members does a Grob Tutor have?

The Grob Tutor is a two-seat, light aircraft primarily used for training purposes by the RAF. It is designed to accommodate an instructor and a student pilot, which is why it has a crew capacity of two. This setup allows for effective flight instruction, enabling students to gain hands-on experience while being guided by an experienced pilot. The two-seat configuration is typical for many trainer aircraft to ensure safety and enhance the learning experience, allowing for a clear view of operations from both positions.

In contrast, the other options suggest capacities that do not align with the Tutor's design and purpose. A one-person capacity would imply a solo trainer, which does not apply to this model, while three or four crew members would exceed its actual design specifications and purpose in flight training environments.