TM 1-1510-218-10
3C-122
Table 3C-49. Alternate Flight Plan Init and Fuel Page Procedure (Continued)
NO.
DESCRIPTION/FUNCTION
8
Scroll laterally to access the Fuel Summary page.
9
Insert/display extra fuel (an asterisk indicates that the value was entered).
10
Insert/display initial ramp fuel (an asterisk indicates that the value was entered.)
11
Select the summary display between hours (hrs) and weight in thousands of pounds (klb).
12
Return to alternate Flight Plan page.
13
Total mission fuel required.
14
Approach fuel (entered on Fuel Init page).
15
Reserve fuel (entered on Fuel Init page).
16
Ground fuel (entered on Fuel Init page).
17
Sum of all leg fuels.
18
Enter the approach fuel allowance.
19
Enter the reserve fuel with type of reserve selected at line select 3R.
20
Enter ground fuel allowance.
21
Insert average climb wind.
22
Insert climb fuel.
23
Insert zero wind climb distance.
24
Insert time to climb in minutes.
When the climb parameters are entered on the
Alternate Climb Init page, the FMS calculates a Top Of
Climb (TOC) leg segment that is used for fuel
calculations. The TOC is displayed on the Alternate
Flight Plan Leg A page for the leg that contains the
TOC. Refer to Figure 3C-67 and Table 3C-50. All leg
segments previous to the TOC use the climb leg
calculations for fuel burn. Following the TOC, the fuel
burn rates for each leg are used for fuel usage
calculations.
The initial fuel entered on the Alternate Fuel Init
page is used in the total fuel summary for the currently
defined alternate flight plan. Initial total fuel is entered
when the quantity of fuel loaded is currently known or
planned. If desired, this value can remain blank and
the FMS will calculate a total fuel summary that must
be entered prior to departure on the Fuel Summary
page.
Reserve fuel can be entered as either a
percentage of mission fuel (%), specified weight (klb),
or duration (min) using the fuel burn rate of the last leg
of the alternate flight plan.
The ground and approach fuel allowances are
calculated in the total fuel summary as indicated on
the Fuel Summary page.
Figure 3C-67. Alternate Flight Plan Leg A Page
