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

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Garmin GNC 420W Pilot's Manual Addendum Manual pdf 3 page image

1CAUTION: The Global Positioning System is operated by the United States government, which is solely responsible for itsaccuracy and maintenance. The system is subject to changes that could affect the accuracy and performance of all GPS equip-ment. Although the Garmin 400W/500W Series units are precision electronic NAVigation AIDs (NAVAIDs), any NAVAID can bemisused or misinterpreted and therefore become unsafe.CAUTION: Use the 400W/500W Series units at your own risk. To reduce the risk of unsafe operation, carefully review andunderstand all aspects of the Owner’s Manual and the Flight Manual Supplement, and thoroughly practice basic operationprior to actual use. When in actual use, carefully compare indications from the unit with all available navigation sources,including the information from other NAVAIDs, visual sightings, charts, etc. For safety, always resolve any discrepancies beforecontinuing navigation.CAUTION: Use the Garmin 400W/500W Series units and the Traffic/Weather Interface at your own risk. To reduce the risk ofunsafe operation, thoroughly practice basic operation prior to actual use. When in actual use, carefully compare indicationsfrom the Garmin 400W/500W Series Unit with all available navigation sources, including the information from other NAVAIDs,visual sightings, charts, etc. For safety, always resolve any discrepancies before continuing navigation. The altitude calculatedby the Garmin 400W/500W Series Unit is the geometric height above mean sea level and could vary significantly from thealtitude displayed by pressure altimeters in the aircraft.CAUTION: The Jeppesen database incorporated in the Garmin 400W/500W Series units must be updated regularly in order toensure that its information is current. Updates are released every 28 days. A database information packet is included in yourGarmin 400W/500W Series unit package. Pilots using an out-of-date database do so entirely at their own risk.CAUTION: The Traffic and Weather information contained in this Pilot’s Guide Addendum is not intended to replace the docu-mentation that is supplied with the applicable Garmin 400W/500W Series unit. The user of the Traffic and Weather Interfaceshould know how to operate the 400W/500W series unit and be knowledgeable about the information in the 400W/500WPilot’s Guides.NOTE: This Pilot’s Guide Addendum is not intended to replace the documentation that is supplied with the Garmin400W/500W Series unit and the applicable weather/traffic system.ForewardWarnings and Cautions