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Instrument Flying Handbook Menu>Human
Factors >Demonstrating
Spatial Disorientation>Climbing While Turning
With the pilot’s eyes still closed and
the aircraft in a straightand- level attitude, the instructor
pilot now executes, with a relatively slow entry, a well-coordinated
turn of about 1.5 positive G (approximately 50° bank) for
90°. While in the turn, without outside visual references
and under the effect of the slight positive G, the usual illusion
produced is that of a climb. Upon sensing the climb, the pilot
should immediately open the eyes and see that a slowly established,
coordinated turn produces the same feeling as a climb.
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