American Airlines said on Tuesday that its reservation system is down and that all flights are being grounded until 4 p.m. CT while they work to get it running again.
UPDATE: We are now in a system-wide ground delay until 4:00pm CT as we work to resolve this issue. We apologize for any inconvenience.
— American Airlines (@AmericanAir) April 16, 2013
After initially saying their reservation and booking tool, Sabre, was offline, the airline later clarified and said they were unable to access their reservations system and that the issue was not with Sabre.
"We're working to resolve the issue as quickly as we can. We apologize to our customers for any inconvenience," said Mary Frances Fagan, American Airlines spokesperson.
The outage is causing delays nationwide as it affects passenger check-in.
American Airlines arrivals are on time 89 percent of the time, while departures are 91 percent on time according to FlightStats.com.
The beleaguered company is emerging from bankruptcy protection and is about to file its reorganization plan as it merges with U.S. Airways.