WUNC48m
Altimeter in Black Hawk helicopter may have malfunctioned before DCA mid-air collision
The National Transportation Safety Board says altimeter in the Black Hawk helicopter may have malfunctioned before the DCA ...
WMBD Peoria on MSN51m
Black Hawk pilots may have missed air traffic directive, flown on ‘bad’ altitude data before crash
It is likely the Black Hawk pilots “stepped on” the communication for less than a second by pressing the microphone key to ...