Foreword
CAUTION: The Global Positioning System is operated by the United States government, which is
Warnings and Cautions
solely re spon si ble for its accuracy and maintenance. The system is subject to changes which could
affect the accuracy and performance of all GPS equipment. Although the Garmin 400/500 Series
units are precision electronic NAVigation AIDS (NAVAID), any NAVAID can be misused or misinter-
preted and therefore become unsafe.
CAUTION: Use the 400/500 Series units at your own risk. To reduce the risk of unsafe operation,
carefully review and un der stand all aspects of the Owner's Manual and the Flight Manual Sup-
ple ment, and thor ough ly practice basic operation prior to actual use. When in actual use, carefully
compare in di ca tions from the unit with all available navigation sources, including the information
from other NAVAIDS, visual sightings, charts, etc. For safety, always resolve any dis crep an cies before
continuing navigation.
CAUTION: Use the Garmin 400/500 Series units and the Traffi c/Weather Interface at your own risk.
To reduce the risk of unsafe operation, thoroughly practice basic operation prior to actual use.
When in actual use, carefully compare indications from the Garmin 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 calculated by the
Garmin 400 Series Unit is the geometric height above mean sea level and could vary signifi cantly
from the altitude displayed by pressure altimeters in the aircraft.
CAUTION: The Jeppesen database incorporated in the Garmin 400/500 Series units must be updated
regularly in order to ensure that its information is current. Updates are released every 28 days. A
database information packet is included in your Garmin 400/500 Series unit package. Pilots using
an out-of-date database do so entirely at their own risk.
CAUTION: The Traffi c and Weather information contained in this Pilot's Guide Addendum is not
intended to replace the documentation that is supplied with the applicable Garmin 400/500 Series
unit. The user of the Traffi c and Weather Interface should know how to operate the 400/500 unit
and be knowledgeable about the information in the 400/500 Pilot's Guide.
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