Arrow PA-28R-201 Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 95

PIPER AIRCRAFT CORPORATION
PA·28R·201, ARROW
5.5 FLIGHT PLANNING EXAMPLE (continued)
(3) Cruise Power (Best Economy)
(4) Cruise Delta OAT from ISA (10° C - 3° C)
(5) Cruise Manifold Press. (23.1
+
[7/5.5 x .16])
(6) Cruise Speed
(7) Cruise Fuel Consumption
(8) Cruise Time
(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 mulitiplied by .84 hrs.)
(f) Total Flight Time
SECTIONS
PERFORMANCE
65% rated power
(2500 RPM)
7°C
23.3 in Hg
130 Kts TAS*
10.3 gph*
.84 hrs.
(51 min.)
8.7 gal.
The total flight time is determined by adding the time to climb,
the time to descend and the cruise time. Remember! The time values
taken from the climb and descent graphs are in minutes and must be
converted to hours before adding them to the cruise time.
The following flight time is required for the flight planning
example:
(1) Total Flight Time
(c)(4) plus (d)(2) plus (e)(8),
(.11 hrs. plus .07 hrs. plus .84 hrs.)
(6.5 min. plus 4 min. plus 51 min.)
(g) Total Fuel Required
1.02 hrs., 61.5 min.
Determine the total fuel required by adding the fuel to climb,
the fuel to descend and the cruise fuel. When the total fuel (in
gallons) is determined, multiply this value by 6 lb.lgal. to determine
the total fuel weight used for the flight.
The total fuel calculations for the example flight plan are
shown below:
(1) Total Fuel Required
(c)(3) plus (d)(I) plus (e)(9),
(3.0 gal. plus 0.5 gal. plus 8.7 gal.)
(12.2 gal. multiplied by 6 lb.lgal.)
*reference Figure 5-27c
ISSUED: SEPTEMBER 15, 1988
REVISED: MAY 8, 1995
12.2 gal.
73.2Ibs.
REPORT: VB·1365
5-7