TM 1-1520-240-10
7-10-1
SECTION X. FUEL FLOW
7-10-1. Description.
The idle fuel flow chart (fig. 7-10-1) presents engine fuel
flow sensitivity to PA and FAT for ground idle and flight
idle.
7-10-2. Use of Chart.
The primary use of the chart is illustrated by the example.
To determine idle fuel flow, it is necessary to know idle
condition, PA, and FAT. Enter PA, move right to FAT,
move down and read fuel flow.
7-10-3. Conditions.
a. Presented charts are based on the use of JP-4
fuel.
b. Ground idle is defined at 60 to 63 percent N1.
c. Ground detent minimum beep is defined as engine
condition levers at FLT, minimum beep and thrust control
at the detent.
d. The single engine fuel flow chart (fig. 7-10-2) base-
line is 0_C. Increase or decrease fuel flow by 1% for
every 10_C change in temperature.
7-10-4. EAPS Installed.
Increase fuel flow by an additional 1%.
