System Operation
3-95
GNS-XLS Flight Management System
Rev. 3
Sep/96
PLANNING PROCEDURES
FUEL PLANNING
1. PLAN Key - DEPRESS to display FUEL STATUS Page.
NOTE: REMAINING and RESERVE quantities are stored in non-
volatile memory after system shutdown. Upon system turn-on, VERIFY
INPUTS is displayed and REMAINING, RESERVE, and FLOW values
will flash.
2. Line Select Key -
DEPRESS to position
cursor over REMAINING
field. (Figure 3-154)
3. Fuel Quantity Remaining
- VERIFY or INSERT.
4. ENTER Key - DEPRESS.
5. Fuel Reserve - VERIFY
or INSERT.
6. ENTER Key - DEPRESS.
7. Fuel Flow - INSERT or VERIFY.
NOTE: No fuel flow entry is required in the Automatic Fuel Flow mode.
All flashing fields must be verified or values inserted using the ENTER
Key, in order for HOURS field to display information. RANGE and NM/LB
fields will display information when a valid ground speed is recognized.
8. ENTER Key - DEPRESS. If a manual fuel flow is entered the VERI-
FY INPUTS message changes to LAST INPUT: and sets the time
at :00 minutes. (MAN) will be displayed adjacent to the FLOW field.
When the LAST INPUT field exceeds 15 minutes, the REMAINING,
RESERVE, and FLOW fields blink indicating verification or update
is required. REMAINING, RESERVE and FLOW must be manually
verified.
NOTE: Auto fuel flow can be reselected by positioning the cursor over
the manual fuel flow and depressing the BACK Key. AUTO? is dis-
played. The current auto fuel flow is displayed in the cursor.
Depressing ENTER Key will select the auto fuel flow. When going
from Manual to Automatic Fuel Flow Mode the REMAINING,
RESERVE and FLOW fields will blink. Verifying inputs is required,
Repeat Steps 2 through 7.
PLAN 1/8
FUEL STATUS LB
REMAINING 5000
RESERVE 1000
FLOW 0
HOURS -----
RANGE -----
NM/LB -----
>
>
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Figure 3-154
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