Density altitude

Density altitude is the altitude in the standard atmosphere at which air has the same density as the actual air. High temperature, high elevation and low pressure raise it and reduce aircraft performance.

German term

Dichtehöhe

On a hot day at an elevated aerodrome, the engine produces less power, the propeller less thrust and the wing less lift at the same indicated speed. Take-off run and climb rate can worsen considerably.

For general information only. Always use official sources, your aircraft's flight manual and current national rules for flight decisions.