The cost of investigating, surveying, planning, acquiring, establishing, constructing, enlarging or improving or equipping airports and other air navigation facilities, and the sites therefor, including structures and other property incidental to their operation, in accordance with this chapter may be paid for by appropriation of moneys available therefor, or wholly or partly from the proceeds of bonds of the political subdivision, as the governing body of the political subdivision shall determine.
As used in this section “cost” includes awards in condemnation proceedings and rentals where an acquisition is by lease.