JACKSONVILLE, Fla. -- No flights landed or took off from Jacksonville International Airport for at hour at midday Friday after the main air-traffic control computer for the Jacksonville region crashed due to a line outage, Channel 4 has learned.

The Federal Aviation Administration said a Bellsouth technician working on the wrong communication line took down some radar, radio communication and land-line telephones at the Jacksonville Air Route Traffic Control Center in Hilliard. The outage began at 12:35 p.m. and lasted until 1:35 p.m.

The FAA issued a "ground stop," which would hold all commercial air traffic that would enter the Jacksonville control center's airspace on the ground at their departure airports. The ground stop was lifted at 1:48 p.m.

JIA said three planes were held on the runway and four more at the gate until the computer was operational again.

The Jacksonville center is the nation's seventh-busiest en route center, controlling airspace extending west to roughly the Florida-Alabama border, south to Orlando, north to southern Georgia, northeast to roughly the North Carolina-South Carolina border and out into the Atlantic Ocean.

According to the FAA, the Jacksonville center was working 321 flights at the time of the outage. Officials said they were able to maintain at least 245 of those flights, handing off the remaining flights to adjoining centers.

All the aircraft delayed at JIA had taken off by 2:30 p.m.