Being an Aeronautical Engineer, i sought out the origin of this saying,
FLYING BY THE SEAT OF YOUR PANTS
Well, there's a pretty simple explanation.
had sophisticated instruments and flight control systems
even today, planes are piloted by feel. Pilots
can feel the reactions of the
in response to their actions at the controls.
Being the largest point of contact between pilot and plane, most of the feel or
feedback comes through the seat of the pants
If you are "flying by the seat of your pants
" your are responding to the