The Federal Aviation Administration is investigating a radio outage at the air traffic control station responsible for managing flights arriving and departing from Newark Liberty International Airport.

The outage occurred Monday morning, and operations are back to normal, according to the FAA.

Monday's outage comes in a series of radar losses since the FAA moved Newark's air traffic control operations to the Philadelphia TRACON Area C facility.

The FAA said in a statement:

"Operations are normal after Philadelphia TRACON Area C lost radio frequencies for approximately two seconds around 11:35 a.m. local time on Monday, May 19. All aircraft remained safely separated. The FAA is investigating."

RELATED: White House proposes major overhaul of air traffic control system amid Newark Liberty delays

RELATED: FAA fixing problems at Newark Liberty while planning overhaul of US air traffic control system