and while we know the helicopter was at 278feet based on its radar altimeter, investigators don’t know what altitude was displayed to crew. Around 17 seconds before the crash, air traffic ...

The second, the radar altimeter, is based on the helicopter sending a radio frequency signal from an antennae to the ground and would have provided the crew additional real-time information on ...

Several injuries have been reported after a Delta flight from Minnesota crashed and caught fire upon landing in Ontario, ...

A preliminary analysis of the flight data and voice recorder on board a Black Hawk helicopter leading up to the collision ...

on January 29, indicated the helicopter’s altimeter may have been inaccurate and the pilots may not have heard some calls from the Reagan National Airport control tower, officials said.

That altimeter uses a radio beam to show the helicopter’s altitude above ground level, but it may not have been what the pilots of the helicopter were referencing at the time of the crash ...

The National Transportation Safety Board says altimeter in the Black Hawk helicopter may have malfunctioned before the DCA ...