Table A3.1. Facility Class 1: Operational and Training Facilities, Category Group 11:
Airfields Pavement, General
Item and Allowance
Rotary-Wing Parking Apron, Unsurfaced
An unpaved, prepared airfield surface used for rotary-wing aircraft parking. The area
includes parking lanes, taxilanes, exits, and entrances. Aircraft move under their own
power to the parking spaces, where they may be parked and secured with tiedowns.
Parking designed to distribute aircraft, for the purpose of increased survivability
(dispersed hardstands) is included in this category code. From an operational point of
view, an apron includes the prepared surface, tiedowns, stabilized shoulders, and
lateral clearance zones. For inventory purposes, only the prepared surface is
Aircraft Maintenance Parking Apron, Surfaced
A paved apron for parking fixed- or rotary-wing aircraft awaiting maintenance.
Mass aircraft parking aprons are authorized for Aviation Intermediate Maintenance
(AVIM) maintenance shop units which have a responsibility for maintenance of
aircraft from other facilities or aviation units. For planning purposes, an apron area
of up to 11,700 m2 [14,000 yd2] is normally sufficient to meet this requirement.
Aircraft will be manually parked on this apron. Separate maintenance parking aprons
are not authorized for aviation units which have their own AVIM maintenance
Aircraft Maintenance Parking Apron, Unsurfaced
An unpaved, prepared apron for parking fixed- or rotary-wing aircraft awaiting
Hangar Access Apron, Surfaced
A paved surface that connects an aircraft parking apron with a hangar. It is generally
equipped with tiedowns and grounding devices. From an operational point of view,
an apron includes the prepared surface, tiedowns, grounding devices, stabilized
shoulders, lighting from the hangar, and lateral clearance zones. For inventory
purposes, only the prepared surface is included.
Hangar access aprons will be provided as a supporting item for each authorized
hangar and will be sized for the type of hangar and aircraft to be accommodated and
to meet the requirements of site development as shown on a Department of the Army
approved general site plan. The access apron will be designed as rigid pavement.
Access aprons should be as wide as the hangar doors. Hangar access aprons are
further discussed in Chapter 6 of this Manual.