FIG 4-5-4 NAS Stage A Controllers View Plan Display This figure illustrates the controller"s radar scope (PVD) when operating in the full automation (RDP) mode, which is normally 20 hours per day. (When not in automation mode, the display is similar to the broadband mode shown in the ARTS III radar scope figure. Certain ARTCCs outside the contiguous U.S. also operate in "broadband" mode.) RADAR SERVICES AND PROCEDURES AAL373 280C 191H-33 UAL33 100A VIG123 310N RDOF EMRG N1467F 140 + 143 NWA258 170 143 UAL712 310N 228CST AAL353 70 231 R15909 170C EXAMPLE- Target symbols: 1. Uncorrelated primary radar target [d] [+] 4-5-8 Surveillance Systems