controller

As predicted, the new machine will be named Switch 2 and closely resemble its predecessor, with similar, detachable controllers but boasting a larger screen.

The Federal Aviation Administration was down about 3,000 controllers nationwide and cut flight schedules throughout the year, he said in Cirium’s report.

Mr Calder adds: "If fog or high winds requires air-traffic controllers to increase the spacing between aircraft by 50%, capacity is immediately reduced by one third – and cancellations begin."

Friday, air traffic controllers directed a chartered flight that had just arrived from Spokane, Wash., to hold short of crossing a runway where a second plane was departing, according to the Federal Aviation Administration.

The San Francisco controller’s office also estimates shutting down the road to cars could save the city up to $700,000 annually in sand removal and other maintenance issues that regularly close down the highway.