In establishing, maintaining and operating airport facilities where construction and repair of roadways, runways, buildings and facilities, or the purchase thereof, are deemed necessary within or for use within the limits of land acquired for such purpose, there shall be no necessity for submission thereof to any court or grand jury of any county, but contracts therefor shall be entered into as provided for in Article XVIII, and in the case of joint establishment, operation and maintenance with any other political subdivision, contracts relating thereto shall be entered into as provided for the general business of any of such participating political subdivisions.
16 P.S. § 2207