Piper Arrow PA-28R-201 Pilot Operating Handbook page 107

PA-28R-201, AR1OW
5.5 FLIGHT PLANNING
(3) Cruise Power (Best Economy)
(4) CruiseDeltaOATfromlSA(10°C-3°C)
(5) Cruise Manifold Press. (23.1
(6) Cruise Speed
(7) Cruise Fuel Consumption
(8) Cruise Thme
(e)(2) divided by (e)(6), (108.5 naut.
miles divided by 130 KTS)
(9) Cruise Fuel
(e)(7) multiplied by (e)(8), (10.3
gph mulitipliedby .84 hrs.)
(f) Total Flight Time
The total flight time is determined by adding the time to climb,
the time to descend and the cruisetime. Remember!
taken from the climb and descent graphs are in minutes and must be
converted to hours before adding them tothe cruisetime.
following flight time is required
The
example:
(1) TotalFlightTime
(c)(4)plus (d)(2)plus (e)(8),
(.11 hrs. plus .07 hrs. plus .84 hrs.)
(6.5 mm.
(g) Total Fuel Required
Determine the total fuel required by adding the fuel to climb,
the fuel to descend
gallons) is deterimned, multiply
the total fuel weight used for the flight.
The total fuel calculations for the example
shown below:
(1) Total Fuel Required
(c)(3)plus (d)(1)plus (e)(9),
(3.0gal.plus 0.5 gal.plus 8.7 gal.)
(122 gal. multiplied by 6 lbJgal.)
*reference Figure 5-27c
12, 1995
ISSUED: JULY
HB-PQY, Page: 5-7-(0)
EXAMPLE
(continued)
[7/5.5 x .16])
+
mm.
plus 4 plus 51 rain.)
and the cruise fuel. When
thisvalue by 6 lbJgal. to determine
Issued: JULY 12, 1995
SECTIONS
PERFORMANCE
65% rated power
(2500 RPM)
7°C
23.3 in Hg
130 Kts TAS*
10.3 gph*
.84 hrs.
(51 rain.)
8.7 gal.
The time values
for the flightplanning
1.02 lirs., 61.5 rain.
the total fuel (in
flight plan are
12.2 gal.
73.2 lbs.
REPORT: VB-1612
5.7
5-7