The department may grant or lend money, subject to the provisions of AS 02.15.060, 02.15.070, and 02.15.120, to any person or municipality or to municipalities acting jointly for project costs relating to the planning, acquisition, construction, improvement, maintenance, or operation of an airport owned or controlled or to be owned or controlled by the municipality or municipalities or person. Grants or loans may be furnished in connection with federal or other financial aid for the same purpose.