Airfield Types and Missions. Navy and Marine Corps airfields are
classified by mission as air stations, air facilities, auxiliary landing fields,
or outlying fields. Airfield layout is determined by the mission and number and
types of supported activities. Airfields also may be categorized by the types
of aircraft for which facilities are provided.
Air Stations. Naval Air Stations (NAS) and Marine Corps Air Stations
(MCAS) may be fleet support air stations; training command air stations;
research, development, test, and special air stations; or overseas air stations.
Master Jet Air Station. The parent NAS or MCAS within a regional fleet
support command which has under its operational control a minimum of two
satellite installations for such activities as instrument training, fleet
carrier landing practice, and ordnance training.
Air Facilities. Naval Air Facilities (NAF) and Marine Corps Air
Facilities (MCAF) may be for fleet support or for some special requirement such
as Marine Corps rotary-wing observation and transport aircraft or support of
research, development, test, and special missions.
Other Air Installations.
Auxiliary landing fields may be either Navy (NALFs) or Marine
Corps (MCALFs), and provide only minimum support.
Outlying fields, either Navy (NOLFs) or Marine Corps (MCOLFs),
generally provide only a landing area.
Land and Airspace Requirements. See NAVFAC P-80 and NAVFAC P-80.3 and
Facility Plate No. 110. The space required for airfields includes the land
area required for runways, taxiways, aprons, and other station facilities, as
well as the adjacent airspace required for the safe arrival and departure of
aircraft. Typical airspace zoning requirements are shown for quadrantal,
triangular, and parallel-perpendicular runway configurations in the five
facility plates comprising Facility Plate No. 110. Airfield layout
considerations include runway orientation, mission requirements, ultimate
development, local terrain, expected type and volume of air traffic,
restrictions due to obstacles or surrounding community, traffic patterns such
as the arrangement of multidirectional approaches and takeoffs, noise impact,
and aircraft accident potential.
Airfield Traffic. A single runway accommodates a fixed maximum number
of Instrument Flight Rule (IFR) movements per hour; however, a different
maximum capability exists for Visual Flight Rule (VFR) operations. These
maximums are directly related to the type of aircraft using the airfield, mix
of different types, mission, runway length, number and location of runway
exits, taxiways, and other factors. Provision of dual runways or
simultaneously usable runway systems may be indicated as a result of a
detailed traffic capacity study.
Runway Systems. The choice among the various runway systems and
configurations which may be used is governed by such factors as mission
requirements, possible ultimate developments, local terrain conditions, and