(Refer to Figure 22 area 2; and Figure 31.) At Coeur D'Alene, which frequency should be used as a Common Traffic Advisory Frequency (CTAF) to monitor airport traffic?

(Refer to Figure 22 area 2; and Figure 31.) At Coeur D'Alene, which frequency should be used as a Common Traffic Advisory Frequency (CTAF) to monitor airport traffic?

• A. 121.5 MHz
• B. 122.8 MHz
• C. 123.0 MHz
• D. 124.0 MHz

Answer: (B)

CTAF is the on-field advisory frequency pilots use to monitor and announce traffic when there is no active control tower or when the tower is closed. The frequency shown for Coeur d’Alene on the airport chart is 122.8 MHz, which is the one designated for monitoring airport traffic in those situations. Using this frequency lets pilots hear other aircraft in the area and broadcast their positions to help coordinate movements safely. The other numbers are not the field’s CTAF: one is reserved for emergencies (121.5 MHz), and the remaining frequencies are not the published CTAF/UNICOM for this airport.

CTAF is the on-field advisory frequency pilots use to monitor and announce traffic when there is no active control tower or when the tower is closed. The frequency shown for Coeur d’Alene on the airport chart is 122.8 MHz, which is the one designated for monitoring airport traffic in those situations. Using this frequency lets pilots hear other aircraft in the area and broadcast their positions to help coordinate movements safely.

The other numbers are not the field’s CTAF: one is reserved for emergencies (121.5 MHz), and the remaining frequencies are not the published CTAF/UNICOM for this airport.