Tri-City Aviation lies on the west side of Tri-Cities Airport and is a fixed base operator (FBO) that provides support services for private and corporate aircraft.  Tri-City Aviation provides storage, fuel and maintenance services to base and transient aircraft. The FBO also performs fuel and maintenance services for TCA-affiliated airlines when necessary and assists with shipping and cargo operations. Tri-City Aviation has 33,000 square feet of heated hangar space able to accommodate wide-body aircraft and 22,500 square feet of unheated hangar space. The FBO also has 21 shadeports to protect single engine and small twin-engine aircraft from the environment.