Beechcraft C-12C Operator And Technical Reference Manual page 213

CAUTION
The KLN 90B fuel calculations are based
on the present rate of fuel flow, the present
groundspeed, the present distance to the
destination airport along the programmed
route, and the amount of fuel onboard
entered at departure. Before takeoff, the
unit must be properly initialized with the
amount of fuel on board.
factors influence the required amount of
fuel to reach the destination, check the fuel
pages often for significant changes. Some
factors affecting
required are power
changes, headwind/tailwind
changes, and routing changes.
(a) OTH 5 Page.
displays the following information.
3-75.
KLFT
FOB:
REQD
L FOB
RES:
EXTRA
OTH 5
Figure 3-75. OTH 5 Page
1. The destination waypoint.
arrow is displayed to the left of the
identifier if the waypoint is the
active waypoint.
2. The fuel units as received from the
AETM.
3. The fuel presently on board (FOB).
To change the present fuel on
board:
a. Turn to the OTH 5 page.
b. Press the left CRSR button to
c. Enter the current fuel on
Since many
the amount of fuel
changes, altitude
component
The OTH 5 page
Refer to Figure
LBS
1800
740
1060
500
560
turn on the cursor function.
board using the left inner and
outer knobs.
4. The fuel required to reach the
5. The landing fuel on board (L FOB)
6. The desired fuel reserve (RES) is
7. The calculated extra fuel (EXTRA)
(b) OTH 6 Page.
displays the following information.
3-76.
1. The endurance (ENDUR) in hours
An
FUEL DATA
ENDUR 2:10
RANGE
NM/LB 0.44
RES:
OTH 6
Figure 3-76. OTH 6 Page
TM 1-1510-218-10
d. Turn the cursor function off.
destination waypoint at the current
rate of fuel flow and the present
groundspeed (REQD).
is the original fuel on board minus
the total fuel required to reach the
destination.
the amount of reserve fuel the pilot
has entered. The fuel must be
entered in the same
displayed on the first line. To enter
the reserve, press the left CRSR
button, rotate the left outer knob to
move the cursor over the RES
field. Use the left inner and outer
knobs to enter the desired fuel
quantity. Press the left CRSR
button to turn off the left cursor
function.
is the landing fuel on board (L
FOB) minus the fuel
(RES).
The OTH 6 page
Refer to Figure
and minutes. The endurance is
calculated based on the amount of
fuel remaining after subtracting out
the reserve (RES) entered on the
OTH 5 page or the OTH 6 page
from the present fuel on board.
580
500
units
reserve
3-59