U.S. Air Force Grounds Entire F-22 Fleet
The decision was made due to oxygen-system concerns in the F-22 Raptor jets.
The U.S. Air Force has grounded its entire fleet of F-22 Raptor fighter jets across the United States because of possible malfunctions in the planes' oxygen supply systems.
Pilots flying the F-22 Raptor jets have reported hypoxia-like symptoms which can occur when the human body is deprived of oxygen.
These reports may provide clues as to why an F-22 pilot from Joint Base Elemendorf-Richardson was killed during a training exercise in November of last year.
However, that crash is still under investigation.
The Air Force has yet to determine how long the grounding is expected to last.