Flight Training Central

SEPTEMBER 9, 2024

What is ground effect? Ground effect is most likely to result in which problem? Inability to get airborne even though airspeed is sufficient for normal takeoff needs. What true airspeed should a pilot expect at 9,000 feet on a standard day with 65 percent maximum continuous power?

Density Altitude 105

Density Altitude Knot Ground Effect True Airspeed 105

Plane and Pilot

JULY 10, 2025

Jet pilots are all aware that up in the flight levels, they thrive on the increased true airspeed that the low atmospheric density produces. Up in the flight levels, jets fly at relatively low indicated airspeed and still cruise at 7-8 miles per minute. Third, there is this little thing called ground effect.

Density Altitude 74

Density Altitude Indicated Airspeed Ground Effect Runway 74

Chess In the Air

JUNE 24, 2022

At the high density altitude at Rifle a ground speed of 92 kt would have been equivalent to an indicated airspeed of less than 80 kt. If this included a wind component of 50 kt from behind, his true airspeed would have suddenly dropped to 30 kt, i.e. well below stall speed.

Pilot 52

Pilot AGL Wind Shear Runway 52