(21) IF REQUIRED SELECT OBS - The
aircraft is 4 nm from a waypoint which could be used
as the basis of either a procedure turn or a holding
(22) INSIDE SPC USE AIRSPACE - Aircraft's
present position is inside an area of special use
(23) MAGNETIC VAR INVALID ALL DATA
REFERENCED TO TRUE NORTH
variation is invalid due to operation outside of the
database magnetic variation area without having a
pilot entered magnetic variation.
message appears when there is a failure of the KLN
90B MSG annunciator drive circuitry. To determine if
message alerting is being given, check the display of
the KLN 90B.
(25) NAV SUPER FLAG FAILURE - This
message appears when an internal test fails for a
specific NAV flag output. The KLN 90B is still usable.
HSI and autopilot should be used with caution.
(26) NO RCVR DATA - The GPS receiver fails
a specific internal test. The unit will not provide any
(27) NO RS -232 DATA - Appears when no
input is received on the RS -232 input, such as a fuel
management or air data system.
(28) OBS WPT > 200 NM - The KLN 90B is in
the OBS mode and the distance to the active waypoint
is more than 200 nm. The system will perform
normally, however, at this distance the deviation bar
will be extremely sensitive to changes in selected
DELETED would be effective for more than 10
POSITION BY > 2NM - Appears when the GPS sensor
first reaches the NAV mode if the new position differs
from the position when the power was turned off by
more than 2 nm.
(31) POSITION OF WPT HAS CHANGED -
Either the latitude or the longitude of a waypoint used
in a flight plan or the active waypoint has changed by
more than 0.33 minutes as a result of updating the
(32) POSITIONS OF OTHER WAYPOINTS
HAVE CHANGED - Appears when the above message
POSITION OF WPT HAS CHANGED would be
effective for more than 10 waypoints.
(33) PRESS ALT TO SET BARO - Appears
when the approach mode is armed.
(34) PRESS GPS APR FOR NAV - Appears
after the NAV flag has displayed due to a RAIM
problem while the unit is in the approach mode. By
pressing the GPS APR button, the unit will be able to
restore navigation information so that a missed
approach may be conducted based on navigation
information provided by the KLN 90B.
(35) RAIM NOT AVAILABLE APR MODE
INHIBITED PREDICT RAIM ON STA 5 - Appears
when integrity monitoring (RAIM) is predicted to not be
available at either the FAF or the MAP. The KLN 90B
will not allow the unit to go into the approach active
mode. Turn to STA 5 page to perform a RAIM
CHECK POSITION - The unit has detected a problem
with one of the satellites and the position cannot be
assured to be within IFR limits. Cross check the
position of the aircraft with other means of navigation
every 15 minutes to verify the position.
(37) RCVR HARDWARE ERROR_____ -
Appears when the unit fails a specific internal test.
Record the numerical value.
(38) RECYCLE POWER TO USE CORRECT
DATABASE DATA - The date entered on the self test
page is before the database effective date and the
date entered on the SET 2 page is after the database
effective date, or vice versa. Turn the unit off and
(39) REDUNDANT WPTS IN FPL EDIT EN
ROUTE WPTS AS NECESSARY - Appears after the
pilot inserts an approach or SID/STAR procedure in
the flight plan. Remove those waypoints that occur
both in the en route and the SID/STAR sections.
(40) RS-232 DATA ERROR - An error is
detected in the received RS-232 data such as from a
fuel management or air data system.
(41) RS-232 OUTPUT ERROR RS-232
output fails internal test. Do not use moving map
(42) SATELLITE COVERAGE INADEQUATE
FOR NAV - Received GPS signals are not adequate