Chapter 6
Figure 6.12. Warm-Up Pad Located in Approach-Departure Clearance Surface.
6.8.3.3. Navigational Aids (NAVAIDS). Warm-up pads must be located so they do not interfere
with the operation of NAVAIDS, including ILS equipment and PAR facilities. To eliminate
interference of the ILS signal by holding aircraft; holding aircraft, on or off a warm-up pad, must
be outside the critical areas. The critical area for ILS equipment is illustrated in Figures 6.13,
6.14, and 6.15. Additional discussion on ILS critical areas is found in TM 5-823-4, Marking of
Army Airfield-Heliport Operational and Maintenance Facilities, AFI 13-203, Air Traffic
6-24
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