Contrary to Vella's claims, the move won't require controllers to take on the six-day schedule, he said.
He also took issue with union complaints that the use of a simulator - rather than live, on-the-job training - to prepare controllers to handle the Palm Springs airspace poses safety concerns.
Simulators have been used successfully in the past and will adequately prepare workers for the new territory, Gregor said.
The idea that the FAA would knowingly ignore safety concerns doesn't make sense, he said.
"Our air traffic operation is absolutely safe now and it will continue to be absolutely safe as we do the financially responsible thing by consolidating," Gregor said.
Closure Concerns Officials; Air Traffic Control: Members of Congress and Others Don't Want a Desert Center Shuttered
Officials plan to move Palm Springs International ATC to a centralized facility more than 100 miles away
FAA PUSHES BACK RELOCATION OF CENTER; Safety Concerns: Plans To Move The Air-traffic Control Facility From Palm Springs Are Postponed.
Palm Springs Air traffic controllers will continue to guide distant planes in and out by radar working from a trailer at the Palm Springs International Airport - at least for the time being...
The FAA has approved 268 air traffic controller spots operating from the Southern California Terminal Radar Approach Center near San Diego. The center, known as TRACON, has filled just 217 of those...
Air traffic controllers misguidedly seen as the source of the FAA's problems.