WASHINGTON — American Airlines briefly grounded flights nationwide Tuesday because of a technical problem just as the Christmas travel season kicked into overdrive and winter weather threatened more potential problems for those planning to fly or drive.
Government regulators cleared American flights to get airborne about an hour after the Federal Aviation Administration ordered a national ground stop for the airline. The order, which prevented planes from taking off, was issued at the airline’s request after it experienced trouble with its flight operating system, or FOS. The airline blamed technology from one of its vendors.
As a result, flights were delayed across American’s major hubs, with only 36% of the airline’s 3,901 domestic and international flights leaving on time, according to Cirium, an aviation analytics company. Fifty-one flights were canceled.
Dennis Tajer, a spokesperson for the Allied Pilots Association, a union representing American Airlines pilots, said the airline told pilots at 7 a.m. Eastern that there was an outage affecting the FOS system. It handles different types of airline operations, including dispatch, flight planning, passenger boarding, as well as an airplane’s weight and balance data, he said.
Some components of FOS have gone down in the past, but a systemwide outage is rare, Tajer said.
Hours after the ground stop was lifted, Tajer said the union had not heard about any ”chaos out there beyond just the normal heavy travel day.” He said officials were watching for any cascading effects, such as staffing problems.
On social media, however, customers expressed frustration with delays that caused them or their family members to miss connecting flights. One person asked if American planned to hold flights for passengers to make connections, while others complained about the lack of assistance they said they received from the airline or gate agents.
Bobby Tighe, a real estate agent from Florida, said he will miss a family Christmas Eve party in New York because his American flight was repeatedly delayed. The delays made him miss a connecting flight, leaving him the choice of going to his destination — Westchester, New York — on Christmas Day or taking another flight to Newark, New Jersey, that was scheduled to land Tuesday evening. He chose the latter.
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