What does TCAS provide to pilots?

• A. Weather radar information and wind shear alerts.
• B. Traffic Collision Avoidance System gives resolution advisories and displays nearby traffic to avoid collisions.
• C. Engine fault indications and performance data.
• D. Terrain elevation and clearance warnings.

Answer: (B)

TCAS helps pilots avoid mid-air collisions by tracking other aircraft and providing actionable guidance. It interrogates nearby aircraft transponders, determines their relative position and altitude, and displays their presence on a traffic display. Most important, it issues Traffic Advisories to alert you to nearby traffic and, when a potential collision is detected, Resolution Advisories that recommend vertical maneuvers (such as climbing or descending) to maintain safe separation. This focus on nearby traffic and avoidance actions is why this option is the best choice.

The other systems described cover weather radar, wind-shear alerts, engine fault indications, performance data, and terrain warnings, which are not provided by TCAS.