tail download is noticeable. This reduction 
in net lift tends to be particular to tailless or 
short coupled airplane configurations. 
The combined effect of flap retraction and 
aft stickis a significant increase in braking 
friction force. Of course, the flaps should not 
be retracted while still airborne and aft stick 
should be used just enough without lifting 
the nosewheel off the runway. These tech- 
niques are to no avail if proper use of the 
390