Cessna 402C Pilot Operating Handbook page 150

SECTION 6
WEIGHT & BALANCE
c",",
402C
MODEL
Detennine scale reading, scale drift and tare from all three
scales.
Lower the a i rp1ane and cl ea r the we i gh i ng cell s as soon as the
readings are obtained.
Computations (see Figure 6-1).
a. Enter the scale reading. scale drift and tare from all three
scales in the columns in the Airplane As Weighed Tab Com-
pute and enter values for the Net Weight and Airplane Total As
Weighed columns.
b. Detennine the CG ann of the airplane using the fonnula pre-
sented in Figure 6-1, if the jack points are used for weighing.
If the airplane is weighed on the wheels, use the following
formula.
I
14.
15.
16.
CG Ann of
Airplane As
=
171.77 -
Weighed
where W N
=
net weight on
all three wheels
=
Inches Aft of Datum
nosewheel and W T = total net weight on
c. Enter the total Net Weight and CG Ann in the Basic Empty Weight
and Center of Gravity Table columns. Multiply the Weight (Lbs)
entry times the CG Ann (In) entry to detennine Moment
(In-lbs/100) entry. Delete printed weight, ann and moments·
listed for fuel tank configurations not installed in the air-
plane. Total each of the three columns to determine basic
empty weight, CG ann and moment.
, . . . . . - - - - - - - NOTE ......- - - - - - - . ,
An attempt shoul d be made to verify the results of
each weighing. when data for comparison is availa-
ble.
d. Enter Basic Empty Weight, CG ann and moment in the Weight and
Balance Record. see Figure 6-4.
WEIGHT AND BALANCE DETERMINATION FOR FLIGHT
The following is a sample weight and balance detennination. For an
actual detennination for your airplane. refer to the equivalent illustra-
tions on the Weight and Balance Data sheet provided in your airplane.
To compute the weight and balance for your airplane. use Figures 6-2
through 6-4 as follows:
Take the Basic Empty Weight and Moment/lOO from the latest entry shown
on the Weight and Balance Data sheet or in Figure 6-4 and enter them in
item 1 (Basic' Empty Weight) of Figure 6-3. For this sample. assume a
weight of 4225 pounds and moment/lOa of 6526.6.
NOTE - - - - - - - - . ,
A blank Weight and Balance Fonn is provided, for the
operatorls convenience, at the end of this section.
6-4
1 November 1979
Revision 3 - 2 Mar 1982