Garmin GNS 430 - Manual (Page 4)

CAUTION
The Global Positioning System is operated by the United States government, which
is solely responsible 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 GNS 430 is a precision electronic NAVigation AID (NAVAID), any NAVAID can
be misused or misinterpreted and therefore become unsafe.
Use the GNS 430 at your own risk. To reduce the risk of unsafe operation,
carefully review and understand all aspects of this Owner’s Manual and the Flight
Manual Supplement, and thoroughly practice basic operation prior to actual use. When
in actual use, carefully compare indications from the GNS 430 to 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 GNS 430 is geometric height above mean sea level and
could vary signifi cantly from altitude displayed by pressure altimeters in aircraft. GPS
accuracy may be degraded by the U.S. Department of Defense-imposed Selective Avail-
ability (SA) program. With “SA” on, GPS altitude may be in error by several hundred feet.
Never use GPS altitude for vertical navigation.
GPS receivers operate by receiving and decoding very low power radio signals
broadcast by satellites. It is possible that in some situations other radio equipment or
electronic equipment used in close proximity to a GPS receiver may create electromag-
netic interference (EMI) which may affect the ability of the GPS receiver to receive and
decode the satellite signals. In such event, the interference may be reduced or eliminated
by switching off the source of interference or relocating equipment.
The Jeppesen database incorporated in the GNS 430 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 GNS 430 package.
Pilots using an out-of-date database do so entirely at their own risk.
NOTE: This device complies with Part 15 of
the FCC limits for Class B digital devices. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used
in accordance with the instructions, may cause
harmful interference to radio communications.
Furthermore, there is no guarantee that
interference will not occur in a particular
installation.
If this equipment does cause harmful
interference, the user is encouraged to try
to correct the interference by relocating the
equipment or connecting the equipment to a
different circuit than the affected equipment.
Consult an authorized dealer or other qualified
avionics technician for additional help if these
remedies do not correct the problem.
Operation of this device is subject to the
following conditions: (1) This device may not
cause harmful interference, and (2) this device
must accept any interference received, including
interference that may cause undesired operation.
The GARMIN GNS 430 does not contain any
user-serviceable parts. Repairs should only be
made by an authorized GARMIN service center.
Unauthorized repairs or modifications could
void your warranty and authority to operate this
device under Part 15 regulations.
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INTRODUCTION
Caution Cautions
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