Airport operations were back to normal early today following a radio failure at a Federal Aviation Administration control facility that tied up travelers for hours.
At Los Angeles International Airport, the outage Tuesday afternoon delayed 400 flights. Two dozen flights at the Oakland International Airport and more than a dozen at Ontario International Airport also did not depart or arrive on time.
In all, planes were grounded for about three hours at airports in the Los Angeles region, northern California and parts of Nevada, a Federal Aviation Administration spokeswoman said.
The failure happened at 4:40 p.m. Tuesday at the Los Angeles Air Route Traffic Control Center in Palmdale.