SECTION 6
WEIGHT & BALANCE
I
EQUIPMENT LIST
CESSNA
MODEL 172S
3. Weighing:
a. Weigh airplane in a closed hangarto
avoid errors caused
by air currents.
.
b. With the airplane
level and brakes
released,
record the
weight shown on each scale. Deduct the tare, if any, from
each reading.
4. Measuring:
a. Obtain
measurement
A by measuring
horizontally
(along
the airplane centerline)
from a line stretched
between the
main wheel
centers to
a plumb
bob dropped
from the
firewall.
b. Obtain
measurement
B by
measuring
horizontally
and
parallel
to the
airplane
centerline,
from
center
of nose
wheel axle, left side, to a plumb bob dropped from the line
. between the main wheel centers. Repeat on right side and
average the measurements.
5. Using weights from item 3 and measurements from item 4, the
airplane weight and C.G. can be determined.
6. Basic Empty Weight may be determined by completing Figure
~1.
.
WEIGHT AND BALANCE
The following information will enable you to operate your Cessna
within the prescribed
weight
and center of gravity
limitations.
To
Icalculate
weight and balance,
use the Sample
Loading
Problem,
Loading Graph, and Center of Gravity Moment Envelope as follows:
Take. the
basic
empty
weight
and
moment
from' appropriate
weight and balance records carried in your airplane, and enter them
in the column
titled
YOUR
AIRPLANE
on the
Sample
Loading
Problem.
-
NOTE
In addition to the basic empty weight and. moment noted on .
these records, the C.G. arm (fuselage station) is also shown,
but need not be used on the Sample Loading Problem, The
moment which is shown must be divided by 1000 and this
value used as the
momenV1
000 on the loading problem.
Use the'Loading
Graph to determine the
momenV1000
for each
additional item to be carried; then list these on the loading problem.
6-6
Revision 4
Содержание Cessna 172S Skyhawk SP
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