CA Gov't Code Section 50478

A local agency may lease or sublease property owned, leased, or otherwise controlled by it for not to exceed 50 years for airport purposes or purposes incidental to aircraft, including:

(a)

Manufacture of aircraft, airplane engines, and aircraft equipment, parts, and accessories.

(b)

Construction and maintenance of hangars, mooring masts, flying fields, signal lights, radio equipment, service shops, conveniences, appliances, works, structures, and other air navigation, aircraft, and airplane engine manufacturing plants and facilities.