Lift is lost, aircraft pitches down, drops below glide slope. Pilot applies power to regain speed, pulls the nose up tp climb back to glide slope. Nose up trim may have been used. When airspeed is regained, thrust required is less than required for previously existing head wind. Thrust is not reduced as quickly as required, nose-up trim compounds the problem, airplane is climbed back above glide slope.
Airplane lands long and fast.
Figure 7 Shear of sufficient magnitude and at an altitude too low to effect recovery. Loss of airspeed is equivalent to shear value. Lift is lost, aircraft pitches down, drops below glide slope. Pilot applies the power to regain airspeed, pulls nose up to climb back to glide slope, engine spool-up requies time. The result is a momentary arrest of the descent with decreasing airspeed followed by a large increase in an already high descent rate.