The crew of the Army helicopter that collided in midair with an American Airlines jet near Washington, D.C.’s Ronald Reagan National Airport may have had inaccurate altitude readings in the moments ...

With so many things flying around in the sky, it’s hard to tell what you’re seeing sometimes as stars, satellites and aircraft take up the night sky.

The NTSB has found discrepancies in the altitude reported by the Black Hawk crew and are investigating potential issues with ...