A normal takeoff is one in which th

A normal takeoff is one in which the airplane is headed intothe wind; there are times that a takeoff with a tail wind isnecessary. However, the pilot must consult the POH/AFMto ensure the aircraft is approved for a takeoff with a tailwind and that there is sufficient performance and runwaylength for the takeoff. Also, the takeoff surfaces are firmand of sufficient length to permit the airplane to graduallyaccelerate to normal lift-off and climb-out speed, and thereare no obstructions along the takeoff path.
There are two reasons for making a takeoff as nearly intothe wind as possible. First, since the airplane depends onairspeed, a headwind provides some of that airspeed evenbefore the airplane begins to accelerate into the wind. Second,a headwind decreases the ground speed necessary to achieveflying speed. Slower ground speeds yield shorter ground rolldistances and allow use of shorter runways while reducingwear and stress on the landing gear.