support equipment are centralized aircraft support systems and pantograph refueling systems.
This allowance also includes markers for petroleum, oils, and lubricants (POL) supply lines,
communications and utility lines, and property demarcation. Ensure proper lighting and fire-
safety features are included and minimum wing tip clearance is provided as required by
Chapter 6, paragraph 6.5.7 and Table 6.1, items 4 through 8.
A220.127.116.11.8. Crew Chief Shack (Non-Frangible). This facility, sometimes identified as an
Airfield Maintenance Unit, is a trailer or permanent prefabricated structure that may be located
at the end of the runway, close to the arm/disarm pad of the apron edge. It may also be located
on an area of the apron where it will not be an obstacle to taxiing aircraft. Explosive quantity
distance criteria in AFMAN 91-201 applies.
A18.104.22.168.9. Service Roads. Service roads may be located on the perimeter of alert aprons,
around specialized aircraft parking pads, and similar apron areas. In locating these roads, the
wing overhang and appropriate safe clearance distance for the largest aircraft using the facility
must be taken into account. The distance from the pad to the edge of the road is computed from
the centerline of the aircraft's path, plus the minimum wingtip clearance given in Table 6.1,
items 4, 5, and 6. Ensure service roads are appropriately marked to control vehicular
movement along and within the roadway. Markings shall be in accordance with AFI 32-1042
and the Manual on Uniform Traffic Control Devices (MUTCD), published by the Department
of Transportation, Federal Highway Administration.
A22.214.171.124.10. Fencing and Barricades (Jersey Barriers) (Non-Frangible). Fencing and
barricades are erected on airfields for a variety of purposes. Guidance for locating fences and
barricades is the same as guidance for locating service roads as discussed in A126.96.36.199.9. No
fence shall penetrate the Primary or Approach-Departure Clearance Surfaces, nor the graded
area of the Clear Zone.
A188.8.131.52.11. Wildlife Control Devices. Various devices such as propane cannons, sirens,
and traps may require siting within the airfield environment for wildlife control. Ensure these
devices are sited at least 30.5 meters (100 feet) from the near edge of runways and overruns.
When sited along taxiways and aprons, ensure these devices do not pose a hazard to taxiing or
towed aircraft and as a minimum, conform to distance and height criteria for airfield signs (see
AFMAN 32-1076). For guidelines on wildlife control fences, see paragraph A184.108.40.206.10
A220.127.116.11.1. Telephone and Fire Alarm Systems. Telephone and fire alarm system boxes
may be located on or in the vicinity of aprons, providing the height of the structure does not
constitute an obstruction to the most demanding aircraft that will use the apron.
A18.104.22.168.2. Trash Collection Containers. Dumpsters and similar equipment may be located
in the vicinity of an apron providing appropriate wingtip clearance requirements given in Table
6.1, items 4, 5, and 6 are provided, and the location does not constitute a hazard to pedestrian or
vehicular traffic from the debris.
A22.214.171.124.3. Landscaping Around Flightline Facilities. All trees and shrubs should conform
to the height restriction as discussed in A126.96.36.199.1 or must be located to provide the
minimum wingtip clearances provided in Chapter 6.
A188.8.131.52.4. Other Apron Facilities. Facilities other than those previously mentioned within
this section may require siting near aprons due to their function and purpose. In these cases