A computer system glitch left thousands of United Airlines passengers across the globe grounded Wednesday, causing a ripple effect of heavy delays throughout major airports.
About 3,500 flights were affected and the airline sought to recover after the ground stop was lifted. Aviation experts said that delays of even 90 minutes could have a snowball effect triggering flight delays at each late flight’s destination.
United confirmed this in a statement on their Twitter feed:
We experienced a network connectivity issue. We are working to resolve and apologize for any inconvenience.
— United (@united) July 8, 2015
The Federal Aviation Administration specifically blamed the ground stop on “automation issues.”