Altitude Indicator

The Altitude Indicator displays how high your aircraft is. There are two altitude indicators, the BARO altitude and the radio altitude.

BARO altitude
The BARO altitude displays the aircraft's altitude relative to the seafloor. It is used for seeing how high you are when doing a water landing. When you are on the water, the BARO altitude is 19.

Radio Altitude
The Radio altitude displays the aircraft's altitude relative to the object closest to the aircraft's underside. It is used for seeing how high you are when doing a ground landing.

Trivia

 * The Radio Altitude is calculated by the lowest part of the plane.