LOS ANGELES -- Planes were not being allowed to take off at Los Angeles International Airport due to a Federal Aviation Administration order, airport officials said Wednesday afternoon.

The FAA said the order was due to technical problems, and that some flights were being allowed to take off after about an hour's delay.

The "ground stop" order also covered nearby airports at Long Beach, Burbank and Santa Ana.

Airport spokeswoman Mary Grady said incoming planes were being allowed to land.

"The FAA's Los Angeles Center air traffic control facility experienced technical issues and stopped accepting additional flights into the airspace managed by the facility for about an hour,'' FAA spokesman Ian Gregor said.

"Some flights were diverted and the agency issued a nationwide groundstop for flights heading into the airspace managed by the center. The agency is gradually restoring the system.

Los Angeles International is the nation's third-busiest airport.

Twitter was abuzz with angry travelers stuck as a result of the order. KFI news radio reported a computer problem caused the grounding.

Rebecca Bloomfield, spokeswoman for San Diego International Airport said the ground stops were due to "unspecified issues with the equipment'' at the FAA's Palmdae, Calif., control center.

The problem occurred at 1:55 p.m. PST, Bloomfield says.

Contributing: Charisse Jones, USA TODAY

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