Garmin GNC 420W Pilot's Manual Addendum

Also see for GNC 420AW: Maintenance manual Pilot's guide addendum Quick reference guide Pilot's Guide & Reference Pilot's Guide & Reference

Contents

Garmin GNC 420W Pilot's Manual Addendum Manual pdf 6 page image

4SECTION 2: L-3 STORMSCOPE INTERFACEL-3 STORMSCOPE DescriptionNOTE: Refer to the WX-500 Pilot’s Guide for a detaileddescription of the WX-500 STORMSCOPE.The L-3 STORMSCOPE WX-500 Weather Map-ping Sensor is a passive weather avoidance systemthat detects electrical discharges associated withthunderstorms within a 200-NM radius of the aircraft.The STORMSCOPE measures relative bearing anddistance of thunderstorm-related electrical activity andreports the information to the display. Interfaces arecurrently only available for the WX-500 STORM-SCOPE System.The 400W/500W Series units perform a self-test during power-up to ensure proper opera-tion of the applicable interface components.Power-Up Self-TestThe power-up self-test ensures that the WX-500functions are operating properly. An error messageis displayed on the Message Page if data is no longerbeing received.User-Initiated TestIn addition to the power-up test, the WX-500 per-forms a continuous self-test. This continuous self-testis performed several times per minute. A user-initiatedtest can also be performed. The WX-500 Pilot’s Guidelists all of the possible faults, probable causes, andrecommended actions if system failures are noted.In addition to the power-up test, the user canperform a self-test that is executed throughthe 400W/500W Series unit display.To perform a user-initiated test:1. From the default Nav Page, turn the smallright knob to select the Lightning (LTNG)Page.2. Press MENU to display the Page Menu.3. Turn the small right knob to select “Self-Test?” and press ENT.Section 2L-3 Stormscope Interface