American Airlines jet that collided with an Army helicopter are feared dead in what was likely to be the worst U.S. aviation disaster in almost a quarter century, officials said Thursday.

It’s been over 12 hours since an American Airlines plane and a military helicopter collided near DCA and crashed into the Potomac River. Daylight ...

The Washington, DC-bound widebody jet - operating as flight UA613 - reportedly dropped about 200ft, according to accounts posted on social media.