Elliott Aviation of Moline, Ill., is waiting for the outcome of a vote on Illinois House Bill 4110 before making an expansion decision. It would grant tax-exempt status on two parcels of ground the MRO leases on Quad-City International Airport, as well as exemption from future property taxes on new improvements. The company released a statement saying it would evaluate other areas of the country for expansion if the bill failed to pass. Elliott Aviation declined to comment on the situation or elaborate on possible expansion plans when contacted by AIN.