Drift, heading, crosswind and other elements calculation.

AIRCRAFT :	WIND :
True course : ° Airspeed : kt	Direction : ° Speed : kt

Density altitude

Pressure-Altitude: ft (<36000 ft) Temperature (°C) :

Horizon : how far can I see ?

... a VOR, for exemple, supposing that the ground is 'flat like the sea' everywhere

Height above the ground : ft