The oxygen generation system problem was said fixed, however, the incident continously occurrs.
The House Armed Services Committee held a hearing to evaluate the results of the Air Force’s investigation. Ultimately, the Air Force found that the F-22 issues were not due to the supply of oxygen. Instead, a combination of factors was cited—most notably, that a valve controlling the pilot’s pressure vest could allow the vest to inflate unnecessarily, which physically restricted the pilot’s ability to breathe.