But many aviation safety experts believe there are not enough fully qualified controllers to handle the growing number of domestic flights.

The controller could handle two drives and a second drive (without controller) retailed for $495.

He shoved the controller handle over to the last notch, and then waited an anxious second.

The lad nodded grimly, and shoved the controller handle over to the last notch.

The driver of it took this for a challenge and threw his controller handle forward.

Seated side by side, the controllers could handle problems more smoothly, he said.

A controller handles interactions and updates the model to reflect a change in state of the application, and then passes information to the view.

The work calls for replacing existing air traffic computers and radar screens so controllers can handle more planes.

Other controllers handle planes in the air and other jobs.

In 1995 the controllers handled 209,000 aircraft movements without incident.