Arrow PA-28R-201 Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 151

SECTION 6
PIPER AlRCRAFf CORPORATION
PA·28R·201, ARROW
WEIGHT AND BALANCE
6.9 INSTRUCTIONS FOR USING THE WEIGHT AND BALANCE
PLOTTER
(continued)
SAMPLE PROBLEM
A sample problem will demonstrate the use of the weight and balance
ploUer. Assume a basic weight and C.G.location of 1890 pounds a184.8 inches
respectiyely. We wish to carry one pilot and one passenger occupying the front
seals. Each occupant weighs 170 pounds. We wish to carry 70 pounds of
baggage in the baggage compartment and 51.3 gallons of fuel. Will we be
within the safe envelope?
(1)
Place a dot on the plotter grid at 1890 pounds and 84.8 inches to
represent the basic airplane
(see
Figure 6-17).
(2) Slide the slotted plastic into position so that the dot is under the slot
for the forward seats (pilot and front passenger) at zero weight.
(3)
Draw a line up the slot to the 340 pound position (170 + 170) and
place a dol
(4) Slide the slotted plastic into position so that the zero end of the
bagggage slot is over this dot.
(5) Draw a line up this slot to the 70 pound position and place the third
dot.
(6)
Slide the slotted plastic into position so that the zero end of the fuel
slot is over this dot.
(7)
Draw a line up this slot to the 308 pound/51.3 gallon position and
place the fourth dot.
(8) As can be seen from Figure 6-17, the final dot shows the total weight
to be 2608 pounds with the C.G.
at
87.0 inches.
This
point is within
the weight and C.G.limits.
(9)
Fuel allowance for engine
start,
taxi, and cunup is 8 pounds.
As fuel is burned off, the weight and C.G. will follow down the fuel line
and
stay within the envelope for landing.
I
REPORT: VB-1365
6-14
ISSUED:
NOVEMBER 8, 1989
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