Garmin GPS 400 Pilot's Manual And Reference page 146

MESSAGES,
8
aBBREVIATIONS
& nav tERMS
Messages
The GPS 400 uses a flashing "MSG" annunciator at the bottom of
the screen (directly above the
tant information or warnings. While most messages are advisory in
nature, warning messages may require your intervention.
Whenever the "MSG" annunciator flashes, press the
M
display the message. Press
page.
The following is a list of available messages and their meanings:
Airspace ahead -- less than 10 minutes
course is projected to enter a special use airspace within 10 minutes.
This message is automatically disabled within 30 nautical miles of an
arrival airport, when an approach is loaded.
Airspace near and ahead
—Your GPS-calculated position is within
2 nautical miles of the boundary of a special use airspace and your
course is projected to enter the airspace within 10 minutes. This
Messages, Abbreviations and Navigation Terminology
M
key) to alert you of any impor-
M
key to
again to return to the previous
—Your GPS-calculated
Section 8
message is automatically disabled within 30 nautical miles of an
arrival airport, when an approach is loaded.
Altitude input failure
—The GPS 400 is configured to receive
altitude serializer data (Icarus, Rosetta or Shadin) and it is not being
received. Or, the data was being received, but has been interrupted.
If a grey code altitude input is available, it will be used instead. If
the problem persists, contact your GARMIN dealer and check the
installation and installation settings. When this message occurs, no
pilot action is required if enough satellites are available for a 3D
position fix (provided no RAIM warnings are present). However, if
only a 2D position fix is possible, the pilot should maintain the GPS
altitude within 1,000 feet of pressure altitude—by entering the
altitude on the position page.
Approach is not active
—The approach could not transition to
"active", at 2 nautical miles or closer to the FAF. Verify that "SUSP"
DOES NOT appear directly above the
waypoint sequencing is suspended. This message also appears if
Receiver Autonomous Integrity Monitoring (RAIM) has determined
that sufficient GPS satellite coverage DOES NOT exist for the phase
of flight you are currently in (along with a "RAIM not available from
FAF to MAP" message). Lastly, if you select a "manual" CDI scale
within the terminal area of the arrival airport, the approach cannot
be activated. (The GPS 400 will automatically reset a "manual" CDI
scale setting to "auto" at 30 nautical miles from the arrival airport.)
N
key, indicating the auto