Last month, the two members of Congress released numbers by the Air Force that showed pilots flying the F-22 Raptor reported illness from oxygen deprivation incidents 10 times as often as pilots of other fighter jets. The data showed Raptor pilots have reported 26.43 hypoxia and hypoxia-like incidents per 100,000 flight hours. While that represents a mere fraction of total flight hours, it is far higher than incidents from other Air Force aircraft, including the A-10, the F-15E and the F-16.
See our May 7 post for the CBS 60 Minutes video that fueled this story. Today the US Air Force keeps 187 Raptors flying from bases in California, Alaska, Virginia, New Mexico, Florida, Nevada, and Hawaii, where the most recent problems occurred.
[Drawing: A.S. Paper Aircraft Lab]