Garmin GNC 420W Pilots Guide - Page 91

Figure 6-16 Waypoint Alert 4) Fly the outbound course. 5) Approximately one minute after passing the FAF (LYH), the alert message 'START PROC TRN' appears in the lower right corner of the screen. Initiate the procedure turn at any time after receiving this alert message. DO NOT USE FOR NAVIGATION SECTION 6 PROCEDURES Refer to Figure 6-17 for the following steps: 6) Course guidance is provided relative to the outbound leg from the FAF. No guidance through the procedure turn itself is given. The procedure turn is displayed on the Map Page and indicated as the active leg on the Default NAV Page and the Active Flight Plan Page. The CDI needle starts moving to the right. 7) When turning to intercept the inbound course, the GNC 420 sequences to the inbound leg to the FAF, the CDI needle swings to the opposite side to provide proper sensing along the final course segment and 'NEXT DTK 025°' appears in the lower right corner of the screen (Figure 6-18).     Figure 6-17 Terminal Mode Figure 6-18 Sequence to Inbound Leg 8) Turn to the final approach course. 9) Within 2.0 nm of the FAF (LYH), the GNC 420 switches from terminal mode to 'approach' mode. CDI scaling is tightened from 1.0 to 0.3 nm, full scale deflection. 10) When approaching the FAF, a waypoint alert ('NEXT DTK 026°') appears in the lower right corner. Make any course adjustments necessary for the final course segment (FAF to MAP). 190-00140-20 Rev. K GNC 420(A) Pilot's Guide and Reference 6-7