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CESSNA
MODEL
172R
SECTION
5
PERFORMANCE
The resultant cruise distance is:
Total distance
Climb distance
Cruise distance
320
-J2
308
nm
With an
expected 10
knot
headwind,
the
ground speed for cruise is
predicted
to
be:
109
-10
99
Knots
Therefore,
the time
required
for
the cruise portion of the trip is:
308
Nautical Miles
= 3.1
Hours
99
Knots
The fuel
required
for cruise is:
3.1
hours X
7.3
gallons/hour = 22.7
Gallons
A 45-minute
reserve requires:
45
£Q
X
7.3 gallons
/
hour =
5.5
Gallons
The total estimated
fuel
required
is
as
follows:
Engine
start,
taxi,
and
takeoff
Climb
Cruise
Reserve
1.1
1.6
22.7
5.5
Total fuel
required
30.9
Gallons
Once the
flight
is
underway,
ground
speed
checks
will
provide a
more
accurate
basis
for
estimating
the time
enroute
and
the
corresponding
fuel
required
to
complete the trip
with ample
reserve.
Dec 2/96
5-7
Summary of Contents for 172R
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