Garmin GNC 420W Pilots Guide - Page 14

SECTION 1 INTRODUCTION The Database Versions Page (Figure 1-5) appears next, which shows the current database information on the NavData Card and Terrain Data cards. Database information highlighted in yellow indicates the database is not within its effective dates. The NavData database is updated every 28 days and must be current for approved instrument approach operations. Information on database subscriptions is available inside the GNC 420 package. Figure 1-5 Database Versions Page Acknowledging the database information: Press the ENT Key. Instrument Panel Self-test Page Once the database has been acknowledged, the Instrument Panel Self-test Page appears (Figure 1-6). To ensure that the GNC 420 and any connected instruments are working properly, check for the following indications on the CDI/HSI , RMI, external annunciators, and other connected instruments: • Course deviation - half left/no flag • TO/FROM flag - TO • Bearing to destination - 135° • Distance to destination - 10.0 nautical mi. • All external annunciators (if installed) - on • Glideslope - half up/no flag • Time to destination - 4 minutes • Desired track - 149.5° • Ground speed - 150 knots The Instrument Panel Self-test Page (Figure 1-6) indicates the currently selected OBS course, fuel capacity (CAP), fuel on board (FOB), and fuel flow (FF). The fuel capacity, fuel on board, and fuel flow may be manually entered if the installation does not include connection to sensors which automatically provide these figures. Entering fuel capacity, fuel on board, or fuel flow figures (if not provided by sensors): 1) Turn the large right knob to select the 'CAP', 'FOB', or 'FF' field. 2) Turn the small and large right knobs to enter the desired figure (Figures 1-6 and 1-7), then press the ENT Key. Figure 1-6 Instrument Panel Self-Test Page 1-6 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. K