NEWARK - A man accused of disrupting air traffic control systems at Newark Liberty International Airport last August is facing a $30,000 fine from the federal government.

A report issued by the Federal Communications Commission says Gary Bojczak, of Whitehouse Station, was in possession of a device that interrupted ground-based augmentation systems. These systems help planes with location, landing and taking off.

The report adds that Bojczak was in a vehicle, which belonged to his employer, that was equipped with a GPS tracking device. He came to the airport and used a blocking device to try and hide his location from that employer.

GPS signal blockers can block a GPS signal, and can also disrupt other GPS devices.

The FCC report says the jammers are illegal to use, but are readily available and inexpensive.