New Delhi, April 17 -- The Federal Aviation Administration (FAA) announced investogation into the viral incident of pilots making animal noises like "meow, meow" on Air Traffic Control (ATC) frequency, stating that all communication should be limited to the safe operation of the plane.

According to ATC.com, the communication took place on ATC frequency on Sunday at Ronald Reagan Washington National Airport, outside the nation's capital.

"FAA regulations prohibit pilots from engaging in non-essential conversations when they're below 10,000 feet altitude," the agency stated, according to People.

"Conversations must be related to the safe operation of the aircraft," The New York Times quoted FAA as saying. The agency said it will probe "a...