Garmin GNS 430 - Manual (Page 178)

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No basemap data available —The GNS 430 has detected a failure in
the built-in basemap (land data) memory. Land data will not appear on
the map page. Other unit functions will continue to work normally, how-
ever the GNS 430 should be taken to your GARMIN dealer for service at
your earliest convenience.
Non-WGS84 wpt navigation —The active “to” and/or “from” way-
points are based upon a map datum other than WGS 84 and cannot be
converted from that map datum to WGS 84. Expect some error in the
position of the waypoint(s) and cross-check with an alternate means of
navigation.
Not receiving input data on 429 Channel #1 —No data has been
received on the ARINC 429 channel #1 connection for a period exceed-
ing five seconds. If the problem persists, the installation should be
checked by your GARMIN dealer.
Not receiving input data on 429 Channel #2 —No data has been
received on the ARINC 429 channel #2 connection for a period exceed-
ing five seconds. If the problem persists, the installation should be
checked by your GARMIN dealer.
Not receiving input data on 232 Channel #1 —No data has been
11 MESSAGES,
aBBREVIATIONS
& nav tERMS
received on the RS-232 channel #1 connection for a period exceeding
ten seconds. If the problem persists, the installation should be checked
by your GARMIN dealer.
OBS key stuck —The O key is stuck in the enabled (or pressed)
state. Try pressing the O key again to cycle its operation. If the mes-
sage persists, contact your GARMIN dealer for assistance.
Poor GPS coverage —The GPS receiver cannot acquire a sufficient
number of satellites to compute a position and provide navigation.
Power down and re-initialize —The GNS 430 cannot calculate a
position due to abnormal satellite conditions. The unit is unusable until
power has been cycled off and back on. Abnormal satellite
conditions may exist and you may need to use an alternate means of
navigation.
RAIM is not available —Receiver Autonomous Integrity Monitoring
(RAIM) has determined that sufficient GPS satellite coverage DOES
NOT exist for the phase of flight you are currently in. (The CDI/HSI
NAV flag will also appear.) Select an alternate source for navigation
guidance, such as the GNS 430’s VLOC receiver.
RAIM not available from FAF to MAP waypoints —When
performing an instrument approach, Receiver Autonomous Integrity
Monitoring (RAIM) has determined that sufficient GPS satellite
coverage DOES NOT exist to meet the required protection limits.
Select an alternate source for navigation guidance, such as the GNS
430’s VLOC receiver (for a VOR or localizer-based approach).
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