SENSOR MESSAGES: (continued)
Sensor Message
Explanation
DR
Either the VLF (RPU), GPS or VPU sensor
is in the Dead Reckoning (DR) mode of nav-
igation. The message annunciator will not
illuminate for VPU.
ENTR SET HDG
The IRS is in the attitude mode and a head-
ing value must be entered.
LINK FAIL
Data exchange between the sensor and
CDU has failed.
*NAV RDY
The sensor is capable of navigation, but has
not been placed in the navigation mode.
Message annunciator will not illuminate.
Only displayed when GPS sensor is not
available.
*NO NAV
The sensor has not navigated since system
power up. Message annunciator will not illu-
minate.
NO RAIM
RAIM is not available at this time.
NO RAIM @ DEST
RAIM is available at the present time, but
will not be available at the destination arrival
time.
NO SYNC
Omega synchronization has not been com-
pleted.
RCVR FAIL
At least one Communication or Omega
receiver has failed.
STD FAIL
The rubidium frequency standard in the RPU
has failed.
Page Display Definitions
2-79
GNS-X
LS
Flight Management System
Rev. 8
Apr/00
Summary of Contents for GNS-XLS
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