The giant hand phenomenon

The "giant hand" is a form of recognized spatial disorientation. An experienced fighter pilot described the events leading up to ejection from his out-of-control aircraft. Investigation of the mishap found no flight control problems and attributed the accident to the giant hand phenomenon. A survey of tactical aircrews indicated that this form of spatial disorientation is not an unusual occurrence. Past training of aircrew to deal with this problem has been inadequate. Earlier reports of this phenomenon recommended attempting to recover the aircraft by grasping the stick using only the thumb and index finger rather than the entire hand. Further investigation to include simulation of this phenomenon in advanced spatial disorientation trainers should contribute to aviation safety.