be enhanced or improved by the installation of parallel taxiways. A full length parallel taxiway
may be provided for a single runway with appropriate connecting lateral taxiways to permit rapid
entrance and exit of traffic between the apron and the runway. At facilities with low air traffic
density, a partial parallel taxiway or mid length exit taxiway may suit local requirements.
However, develop plans so that a full parallel taxiway may be constructed in the future when it
can be justified.
18.104.22.168. Runway Exit Criteria. The number, type, and location of exit taxiways is a function of
the required runway capacity. Exit taxiways are typically provided at the ends and in the center
and mid-point on the runway. Additional locations may be provided as necessary to allow
landing aircraft to exit the runway quickly. Additional information on exit taxiways may be
found in Chapter 5.
22.214.171.124. Dual-Use Facility Taxiways. For taxiways at airfields supporting both fixed-wing and
rotary-wing operations, the appropriate fixed-wing criteria should be applied.
126.96.36.199. Paved Taxiway Shoulders. Paved taxiway shoulders are provided to reduce the effects
of jet blast on areas adjacent the taxiway. Paved taxiway shoulders help reduce ingestion of
foreign objects debris (FOD) into jet intakes. Paved shoulders will be provided on taxiways in
accordance with the requirements set forth in Chapter 5 and Attachment 3.
2.8.2. Aircraft Parking Aprons. Aircraft parking aprons are the paved areas required for aircraft
parking, loading, unloading, and servicing. They include the necessary maneuvering area for access
and exit to parking positions. Aprons will be designed to permit safe and controlled movement of
aircraft under their own power. Aircraft apron dimensions and size are based on mission
requirements. Additional information concerning Air Force aprons is found in AFH 32-1084,
Section D, Apron Criteria.
188.8.131.52. Requirement. Aprons are individually designed to support specific aircraft and missions
at specific facilities. The size of a parking apron is dependent upon the type and number of
aircraft authorized. Chapter 6 provides additional information on apron requirements.
184.108.40.206. Location. Aircraft parking aprons typically are located between the parallel taxiway
and the hangar line. Apron location with regard to airfield layout will adhere to operations and
safety clearances provided in Chapter 6 of this manual.
220.127.116.11. Capacity. Aircraft parking capacity for the Army is discussed in Attachment 3 of this
manual; in NAVFAC P-80 for the Navy; and AFH 32-1084 for the Air Force.
18.104.22.168. Clearances. Lateral clearances for parking aprons are provided from all sides of aprons
to fixed and/or mobile objects. Additional information on lateral clearances for aprons is
discussed in Chapter 6.
22.214.171.124. Access Taxilanes, Entrances, and Exits. The dimensions for access taxilanes on aircraft
parking aprons are provided in Chapter 6. The minimum number of exit/entrance taxiways
provided for any parking apron should be two (2).
126.96.36.199. Aircraft Parking Schemes. On a typical mass parking apron, aircraft should be parked
in rows. The recommended tactical/fighter aircraft parking arrangement is to park aircraft at a
45-degree angle. This is the most economical parking method for achieving the clearance
needed to dissipate jet blast temperatures and velocities to levels that will not endanger aircraft
or personnel. (For Navy, these are 38 C (100 F) and 56 kmh (35 mph) at break-away