What three things must you issue a safety alert for?

Issuing a safety alert is a critical function in air traffic control and aviation safety. The correct answer focuses on TOA (type of aircraft), terrain, and obstructions, as these are key factors that can significantly compromise the safety of an aircraft in flight.

TOA, or type of aircraft, is essential because different aircraft have varying performance capabilities, including speed, altitude, and maneuverability. Understanding the type of aircraft involved can help controllers provide relevant safety information.

Terrain plays a vital role in flight safety, especially in areas where high terrain or mountainous regions can pose risks. Alerting pilots about terrain awareness can help them avoid potential collisions with the ground during takeoff, landing, or approach phases of flight.

Obstructions refer to any physical structures or hazards that could interfere with the safe operation of an aircraft. This could include buildings, towers, or any other structures that could pose a risk to flying aircraft.

The other choices focus on various aspects of flight and safety, but they do not encompass the specific criteria for issuing a safety alert as comprehensively as TOA, terrain, and obstructions. By focusing on these three critical factors, pilots and air traffic controllers can mitigate risks more effectively and enhance overall flight safety.