Control towers at five airports in West Virginia and two in Virginia could close by April 1 if lawmakers fail to head off federal budget cuts set to take effect Friday.

The Federal Aviation Administration warns it will have to close 100 towers at airports with fewer than 150,000 flights a year as part of its plan to trim $600 million in costs.

In West Virginia, five are slated for closure including Wheeling. Only the towers at Morgantown and Charleston would remain open.

Flights would still run, but pilots using radios would have to coordinate landings and takeoffs themselves, with no assistance from air traffic controllers. That could lead to delays clearing runways.