Garmin GNC 420W Pilots Guide - Page 221

SECTION 11 ADDITIONAL FEATURES Entering an identifier: 1) Select the Data Link Page. Highlight 'TEXTUAL METAR' and press the ENT Key. 2) Turn the small right knob and scroll through the list of four letter identifiers. 3) Highlight the desired identifier and press the ENT Key. 4) The text box displays the METAR data for the selected identifier. 5) To request an updated graphic or textual METAR for this airport, press the MENU key to access the page menu and select 'Request METAR?'. 6) The METAR Request Page is displayed. The request option is displayed on the Textual METAR Page. Displaying Wind Data Displaying wind data on the NAV Weather Page: 1) Select the NAV Weather Page. 2) Press the small right knob. The upper left hand corner field flashes. 3) Turn the small right knob and select 'WINDS'. 4) Press the small right knob. The wind icons are displayed on the NAV Weather Page. Displaying Temperature/Dewpoints Temperature/Dewpoints are displayed on the NAV Weather Page. Displaying Temperature/Dewpoints on the NAV Weather Page: 1) Select the NAV Weather Page. 2) Press the small right knob. The upper left hand corner data field flashes. 3) Turn the small right knob and select 'TEMP/ DP'. 4) Press the small right knob. The Temperature/ Dewpoints are displayed on the NAV Weather Page. NOTE: See a complete description of all METAR, Wind, and Temp-Dewpoint symbols at the end of this section. Troubleshooting Although it is the responsibility of the facility that installed the GDL 49 or GDL 69/69A to correct any hardware problems, the pilot can perform some quick troubleshooting steps to find the possible cause of a failure. First, ensure that the owner/operator of the aircraft in which the GDL 49 or GDL 69/69A is installed has subscribed to Echo Flight or XM Satellite Radio for a Service Plan, and verify that it has been activated. Perform a quick check of the circuit breakers to ensure the GDL 49 or GDL 69/69A has power applied. If a failure still exists, continue to the Data Link Status Page. The fields on the Data Link Status Page may provide insight to a possible failure. Information displayed at this page should be noted and provided to the repair station. The Connectivity Message table should also provide a clear indication of any potential internal failures. If no indications exist, check the circuit breakers and electrical connections to the GDL 49 or GDL 69/69A, and ensure the unit has power applied. Repair stations are equipped to repair the system, should a hardware failure exist. 190-00140-20 Rev. K GNC 420(A) Pilot's Guide and Reference 11-31