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System Operation
3-126
GNS-XL Flight Management System
Rev. 0
Oct/96
NOTE: In some cases, (MAN) will appear in the HDG field and the
SYSTEM MESSAGES Page will display USING MAN HDG mes-
sage.
LOSS OF POWER IN FLIGHT
THIS PROCEDURE SHOULD ONLY BE USED IN A REMOTE
AREA WHERE NAVAIDS ARE UNAVAILABLE AND THERE IS
REASON TO BELIEVE THE SENSORS CONTRIBUTING TO THE
COMPOSITE POSITION MAY BE IN ERROR.
The procedure allows the pilot to initialize enroute when the aircraft
has sustained a loss of power for more than 7 seconds. The Power
Off Waypoint, “#OFF”, provides a snapshot of system data at the
moment power was lost.
To Initialize when power is restored:
NOTE: When power returns, system performs Self Test and displays
the INITIALIZATION Page.
1. DATE and GMT - VERIFY
or ENT current DATE and
GMT if required.
2. ENT Key - DEPRESS to
place the cursor over the
POS field, if required.
NOTE: The coordinates are
a rolling display of the real
time blended position of the
sensors being updated.
3. ENT Key - DEPRESS to
accept real time position.
4. HOLD Key - DEPRESS.
5. Power Off Waypoint
IDENT - INSERT “#OFF”.
(Figure 3-200).
6. ENT Key - DEPRESS.
7. MINUTES OFF, LAST
TK, LAST GS - VERIFY
and RECORD for future
use. (Figure 3-201).
POS N 4055.30
W09547.30
IDENT #OFF
FIX ---------
---------
DIF ---------
---------
POSITION FIX
>
>
<
Figure 3-200
WAYPOINT #OFF
POS N 3837.20
W10537.00
GMT OFF 21:50
MINUTES OFF 00.6
LAST TK 060
LAST GS 407
SPECIAL WPT
Figure 3-201