Remove Ground Effect Remove Indicated Airspeed Remove Wind Shear
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Invisible Trap Kills Glider Pilot – How To Avoid Microbursts

Chess In the Air

Moderate wind shear in some areas could make some thermals somewhat difficult to work but that, too, is typical. His ground speed had dropped to 75 kt so he also had less kinetic energy reserve. Without knowing the horizontal wind direction and speed at this point it is impossible to say what his indicated airspeed was.

Pilot 52