GPS 400 Pilot’s Guide and Reference
190-00140-60 Rev. E
SECTION 12 – MESSAGES,
ABBREVIATIONS, & NAV TERMS
12-3
Message
Description
Database changed,
validate user modified
procedures
The pilot has modified one or more approaches, departures, or arrivals from their original
published form. When the NavData Card is replaced (database update), manually verify
the changes in the new database. This message occurs each time a flight plan containing
a modified procedure (generated from a prior database version) is activated. To eliminate
the message, re-create the flight plan from the new database, then make the desired
modifications.
Degraded accuracy
GPS position accuracy has been degraded and RAIM is not available. Poor satellite geometry
(or coverage) has resulted in a horizontal DOP greater than 4.0. Additional cross-checking
using another navigation source is required to verify the integrity of the GPS position.
Display backlight
failure
The GPS 400 has detected a failure in the display backlighting. The unit should be taken to a
Garmin dealer for service.
Do not use for
navigation
The GPS 400 is in Demo Mode and must not be used for actual navigation.
FPL has been truncated
The flight plan (FPL) was truncated because not enough room existed to insert an approach,
departure, or arrival. This message also appears when an approach has been deleted from
a stored flight plan because an approach could not be found. These conditions may occur
upon power up when a database change increases the number of waypoints in, or removes
an approach from, an instrument procedure.
FPL is full - remove
unnecessary waypoints
An attempt has been made to add more than 31 waypoints to a flight plan (FPL). The GPS
400 does not allow more than 31 waypoints per flight plan.
FPL leg will not be
smoothed
The upcoming flight plan (FPL) leg is too short for smooth waypoint transitions. Expect a
rapid change in the CDI.
FPL waypoint is locked
At least one flight plan (FPL) waypoint is locked because the waypoint has been removed
from the current NavData Card (database change), the data card is missing, or the data card
has failed.
FPL waypoint moved
The position data for one or more flight plan (FPL) waypoints moved at least 0.33 arc
minutes in the current NavData Card (database change).
FPL waypoint was
deleted
At least one flight plan (FPL) waypoint is no longer available when a new NavData Card was
installed (database change).
GPS has failed
The GPS 400 has detected a failure in its GPS receiver. The GPS receiver is not available and
the unit should be returned to a Garmin dealer for service.
GPS is not responding
Internal system-to-system communication between the main processor and the GPS receiver
has failed. Operational status of the GPS receiver is unknown and the unit should be
returned to a Garmin dealer for service.
