United Airlines flights grounded nationwide because of computer problems

United Airlines is having major operational difficulties with a computer system that helps determine the weight and balance of a departing aircraft. The airline is preventing all of its departures from taking off. Flights already in the air are not affected by the computer problems.

Hundreds of United Airlines flights were disrupted on Wednesday evening as the carrier grappled with a major computer system outage. The airline requested ground stops at its major hubs in the U.S.

(Image credit: Ronaldo Schemidt)