NTSB's Friday briefing about the fatal midair collision near DCA highlighted ongoing investigations into potential radio communication lapses.

The radio altimeter on board the Black Hawk at the time of the deadly midair collision read 278 feet, Homendy said. That altimeter uses a radio beam to show the helicopter’s altitude above ground ...

“Seventeen seconds before impact, a radio transmission from the tower ... that's what the Black Hawk crew was seeing on the barometric altimeters in the cockpit,” she said.

WASHINGTON — The crew of the Army helicopter that collided with an American Airlines jet may have had a malfunctioning altimeter that ... both aircraft recorded a radio transmission from the ...

Investigators issued their preliminary report Tuesday in the probe into the devastating crash between an American Airlines plane and a U.S. Army Black Hawk helicopter.

“Every year is a little bit different, but what’s clear is that the ocean continues to rise, and the rate of rise is getting ...

The radio altimeter on board the Black Hawk at the time of the deadly midair collision read 278 feet, Homendy said. That altimeter uses a radio beam to show the helicopter’s altitude above ...

Altimeter in Black Hawk helicopter may have ... in the data" and are continuing their analysis. Homendy says some radio transmissions between the air traffic controller and the Black Hawk crew ...

Amid the ongoing investigation into the midair collision in Washington, D.C., in January that killed 67 people, including six ...