 While the plane continues in the turn and begins to indicate a loss of altitude, the pilot will try to correct the loss of altitude by "pulling up" on the plane's controls.Attempting to adjust the controls in this way will have the effect of tightening the radius of the turn and eventually quickening the rate of descent until the pilot is visually cued to the nature of the error or contact with the terrain occurs.One of the most famous cases of an aircraft mishap from this form of spatial disorientation was the crash that killed John F. Kennedy Jr. over Martha's Vineyard in 1999.