Two airports seeking general aviation facilities have issued requests for proposals (RFPs). Bids are due March 19 on an RFP to construct and manage an FBO and GA hangars at Livermore Municipal Airport, Calif. Bids must be submitted by March 9 to an RFP for an FBO, maintenance facility, charter operation or corporate flight department to occupy a 95,000-sq-ft hangar and office under construction at Asheville Regional Airport, N.C.