US Air Force Grounds F-35s at Arizona Base

An F-35A Lightning II on static display at Luke AFB, Arizona, in April 2016. (U.S. Air Force/Tech. Sgt. Christopher Boitz)

 

Base officials halted local flights after five pilots experienced symptoms of oxygen deprivation.

The U.S. Air Force has grounded 55 of its F-35 Joint Strike Fighters at Arizona’s Luke Air Force base following five incidents in which pilots experienced symptoms of oxygen deprivation.

The pilots “reported physiological incidents while flying” but a backup oxygen system turned on, allowing them to land safely, Capt. Mark Graff, an Air Force spokesman at the Pentagon, said in an email Friday afternoon.

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