NEW : for unknown reasons , Air Force officials said . Test pilot David Cooley , 49 , of California , Palmdale , dies in crash . F-22A fighter jet crashes 35 miles northeast of Air Force around 10:30 a.m . The one -seater jet was on a test mission when it crashed . At $ 150 million apiece , the F-22A is the most expensive Air Force fighter .
NEW : Test pilot David Cooley , 49 , of California , Palmdale , dies in crash . F-22A fighter jet crashes 35 miles northeast of Air Force around 10:30 a.m . The one -seater jet was on a test mission when it crashed . At $ 150 million apiece , the F-22A is the most expensive Air Force fighter .