A number of military pilots have reported issues with oxygen systems in various aircraft in recent years, and now the U.S. Air Force has grounded its F-35 Joint Strike Fighter fleet at Luke Air Force Base in Arizona, after five incidents in which pilots complained of hypoxia-related issues. The problems occurred between May 2 and June 8. Backup oxygen systems took over, and the pilots all landed safely. Training flights at the base were canceled on Friday and were scheduled to resume on Monday, but now the grounding has been extended indefinitely. About 55 F-35s are based at Luke, and a total of 220 are flying in the U.S. and allied nations.
This is a companion discussion topic for the original entry at https://www.avweb.com/recent-updates/business-military/f-35-fighters-grounded-by-oxygen-issues