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the climb technique is the same used for normal takeoffs and climbs maintaining the proper ground track with the proper wing correction angle/crab angle. [Figure 7-8] 

In addition to normal takeoffs, additional common errors in the performance of crosswind takeoffs are: 

• Letting the windward side of the wing get too high. 

• Allowing the wing to weathervane into the wind during the takeoff roll. 

• Not obtaining additional speed before rotation. 

• Too slow of a rotation during lift-off. 

• Inadequate drift correction after lift-off. 

##  Ground Effect on Takeoff 

Ground effect is a condition of improved performance encountered when the aircraft is operating very close to the ground. Ground effect can be detected and measured up to an altitude of about one wingspan above the surface. [Figure 7-9]  However, ground effect is most signifi cant when the WSC aircraft is maintaining a constant attitude at low airspeed and low altitude. Examples are during takeoff when the aircraft lifts off and accelerates to climb speed, and also during the landing fl are before touchdown. When the wing is under the infl uence of ground effect, there is a reduction in upwash, downwash, and wingtip vortices. 

Since the WSC wing is a high wing aircraft, the effects are not as pronounced as a low wing airplane, but during rotation, the reduction in induced drag is about 25 percent 

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and decreases as the WSC aircraft climbs. At high speeds where parasite drag dominates, induced drag is a small part of the total drag. Consequently, the effects of ground effect are of greater concern during takeoff and landing. 

