In advance of the cuts; the Federal Aviation Administration is preparing to eliminate $600-million from its budget. It has sent notice to 100 air traffic control facilities across the country that they'll be closed. Four airports are on the list in Oregon: North Bend, Eastern Oregon Regional at Pendleton, McNary Field in Salem and Troutdale. Eight airports are on the list in Washington State: including Tacoma, Yakima, Olympia and Felts Field in Spokane. Not having a tower means pilots will need to use another set of procedures to communicate when they're landing and taking off. The airports will remain open.