AIRPORT MAINTENANCE DIVISION The John Wayne Airport (JWA) Facilities Maintenance division is responsible for the upkeep, repair, and safety of all JWA facilities. Facilities include a terminal building with approximately 800,000 square feet of interior space, as well as maintenance of over 500 acres of airfield and parking structures with more than 10,000 parking spaces. In addition to the regular repair and upkeep of these facilities, the Facilities Maintenance Division is also responsible for the JWA's compliance with all local, state, and Federal environmental regulations.