Supplement POH Cessna 172 R&S
Page 5-4
Issue 3
Revision -, June 2016
FUEL REQUIRED
The total fuel requirement for the flight may be estimated using
the performance information in Figures 5-2 and 5-4. For this
sample problem, Figure 5-2a shows that a climb from 1000 ft to
6,000 ft requires 4.6 l (1.2 US gal) of fuel. The corresponding
distance during the climb is 12.1 NM. These values are for a
standard temperature and are sufficiently accurate for most
flight planning purposes.
However, a further correction for the effect of temperature may
be made as noted in Note 2 of the climb chart in Figure 5-2a. An
effect of 10°C above the standard temperature is to increase
time and distance by 10%due to the lower rate of climb.
In this case, assuming a temperature 16°C above standard, the
correction would be:
With this factor included, the fuel estimate would be calculated
as follows:
Fuel to climb, standard temperature:
4.6 l (1.2 US gal)
Increase due to non-standard temperature:
4.6 l (1.2 US gal) x 16% = 0.7 l (0.2 US gal)
Corrected fuel to climb:
5.3 l (1.4 US gal)
Using a similar procedure for the distance to climb results in
14.0 NM.
16 °C
x 10 % = 16 % (Increase)
10 °C
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