##### Equivalent Air Speed Equivalent airspeed (EAS) is defined as the airspeed at [[MSL|sea level]] in the [[ISA|International Standard Atmosphere]]  at which the (incompressible) dynamic pressure is the same as the dynamic pressure at the true airspeed ([[TAS]]) and [[altitude]] at which the aircraft is flying. >Covered in: >Mentioned in: >References: [[WP Airspeed|🌎]] >Required by: > >Related to: