S- Conveyance under section 16, Federal Airport Act of 1946 or section 23, Airport and Airway development Act of 1970. NONE- no grant agreement exists. Airport airspace analysis determination. Status of airport that is available for use during a national emergency. These are civil airports that were formerly military airfields but the military services have a continuing interest in their use during national emergencies.
Data values are one or a series of alphanumeric codes indicating national emergency status.
1- Airports certificated under FAR part 139. 2- Civil Airport where military use is subject to lease. 3P-Airport is partially released from National Emergency use provision. 3E- Airport is entirely released from National Emergenct use provision. 4- Airport includes surplus real property which has been conveyed for, or converted to, revenue production.