W
EIGHT AND
B
ALANCE
R
EVISION
:
-
D
ATE
:
12/29/04
P
AGE
:
11
Copyright
2004 Glasair Aviation, LLC Arlington, Washington All rights reserved
I
TEM
W
EIGHT
(
LB
.)
S
TATION
(
IN
.)
M
OMENT
(
IN
.-
LB
.)
Empty Sportsman
1,363.0
95.3
129,993
Pilot 170.0
101.0
17,170.0
Passenger 0.0
101.0 0.0
Fuel (15 gal.)
90.0
108.0
9720.0
Forward baggage
0.0
136.0
0.0
Passenger 0.0
144.0 0.0
Aft baggage
0.0
160.0
0.0
T
OTAL
1,623.0
—
156,823
Table 5-1: Sample Forward CG Limit Check
CG = Total Moment = 156,823 in.-lb. = Station 96.6
Total Weight 1,623 lb
CG (%MAC) = 96.6-89.4 X 100 = 16.4 % MAC
44.0
In this example, both the total gross weight and the station of the CG
are within limits. An airplane with a heavier engine or a lighter pilot,
however, could possibly have a CG forward of the allowable range.