What does the Systems Display indicate?

The correct answer focuses on hydraulic pressure and brake temperature. The Systems Display provides crucial information about various systems that are vital for the operation and safety of the aircraft. It primarily allows crew members to monitor the performance and functionality of hydraulic systems and the braking mechanisms of the aircraft. Monitoring hydraulic pressure is essential because it ensures that all hydraulic systems, which are responsible for various operations such as landing gear and wing flaps, are functioning properly and safely.

Additionally, brake temperature is critical to ensure that the braking system is operating within safe limits, especially during landing and after prolonged use. High brake temperatures can indicate potential failures or unsafe conditions, making it imperative for aircrew to have access to this data.

The other options provide valuable information but do not represent what the Systems Display indicates. Traffic alerts and collision avoidance pertain to navigational systems, engine thrust mode and EGT involve engine performance indicators, and airspeed and VSI relate to flight dynamics. However, the usage of the Systems Display is specifically focused on monitoring hydraulic and brake systems.