By Charlotte Alter / Time.com and Time.com
March 28, 2016
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OLD BETHPAGE, NY - SEPTEMBER 05: A drone is flown for recreational purposes as an airplane passes nearby in the sky above Old Bethpage, New York on September 5, 2015. (Photo by Bruce Bennett/Getty Images)
Credit: Bruce Bennett

This story originally appeared on Time.com

More than 100 pilots report drone sightings every month, the Federal Aviation Administration announced Friday, causing significant concern for air safety as drones become increasingly popular.

It’s illegal to operate drones around airplanes and airports, the FAA warned, yet the administration has seen a dramatic increase in the number of drone spottings in the last two years. Illegally operating a drone can result in a stiff fine or jail time.

The FAA is continuing to try to raise awareness about drone safety through their “Know Before You Fly” campaign.