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 ...

The National Transportation Safety Board says altimeter in the Black Hawk helicopter may have malfunctioned before the DCA mid-air collision with an American Airlines jet. All 67 people aboard died.

Investigation into midair collision near DCA homes in on altimeter errors, radio issue. Zach Wichter. USA TODAY. Hear this story. AI-assisted summary.

Ziplevel Pro-2000 Altimeter Makes It Easy to Measure Sites. The precise pressurized hydrostatic altimeter is designed for easy one-person use to replace laser levels on job sites.

Airplane altimeters rely on a spectrum from 4.2 GHz to 4.4 GHz, but some cannot filter out 5G transmissions from the carriers' spectrum in the 3.7–3.98 GHz range.