American Airlines says flights are resuming after all services were grounded
American Airlines says it's resuming flights after all services were grounded at the start of Christmas Eve - one of the busiest travel days of the year
The airline blames a "vendor technology issue" but says the "issue has been resolved"
The Federal Aviation Authority announced a nationwide "groundstop" for AA flights, which was lifted after an hour
Many AA flights scheduled for this morning have been delayed by between one and two hours
American Airlines says flights are resuming after all services were grounded
