area magnetic survey. In this survey, the direction and strength of earth's
magnetic field are measured at various points in the selected swing site to
determine if the earth's field is sufficiently uniform to ensure accuracy of
Pavement. The pavement shall be non-reinforced portland cement
concrete, and shall have load-bearing capacity equivalent to the taxiway
servicing the pad in order to support the most critical wheel loading. A
10-foot paved shoulder, sloped to drain away from pad and access taxiway, shall
be provided along with an unpaved portion. See Table 15 and Figure 27 for
Access Taxiway. A paved access taxiway, having a minimum width of
75 feet, shall be provided. The minimum distance from the centerline of the
nearest primary taxiway to the center of the compass calibration pad shall be
not less than 275 feet. The access taxiway shall be oriented so as to
facilitate moving the aircraft onto the calibration pad directly on a
Electrical Requirements. Magnetic compass (MC) calibration sets
require an alternating current power source at the pad. The MC-2 requires
alternating current single-phase electric power, 115 + 10 volts, 400 + 10 hertz
with a second harmonic less than 0.575 volt alternating current and maximum
input of 200 volt-amperes. Consult technical manual of the set to be used for
Pavement Markings. See Figure 27 for method of delineating the
north-south line on Type I pads and marking the compass rose on Type II pads.
Arming and De-arming Pad. Arming and de-arming pads are used for the
loading and unloading of aircraft ordnance.
Location. Arming and de-arming pads shall be located adjacent to
runway thresholds. See Figure 28. Prior to the construction of any arming and
de-arming pad, local field measurements shall be taken to ensure that the
location is electromagnetically quiet. To avoid potential electromagnetic
interference from taxiing aircraft, pads shall be located on the side of a
runway opposite the parallel taxiway.
Pavement. For specific requirements, see Table 16. An all-weather
access road, to accommodate ordnance handling vehicles, shall be provided.
Line Vehicle Parking. Line vehicle parking areas are provided for
parking of mobile station-assigned and squadron-assigned vehicles and equipment.
For fire and crash vehicle parking, see NAVFAC P-80. For parking of squadron
equipment, see also MIL-HDBK-1028/1, Aircraft Maintenance Facilities.
Location. Select parking areas that permit optimum efficiency in use
of the equipment. Locations shall conform to lateral safety clearance
requirements of existing or planned airfield pavements. See Figure 29 for
typical site plan.