Airplane Flight Manual
Page 8
Section - 6
WEIGHT & BALANCE
FAA Approved
Revision A3: Apr 26, 2007
Center of Gravity (CG) Data
NOTE: All CG values and calculations in this section are expressed in feet or meters
from the CG datum.
The CG Datum (0.000) is at fuselage station 353.04 inches or 8.967 meters, which is 11 feet
or 3.353 meters forward of the Reference Point located on the aft fuselage, below the right
engine pylon. Arms measured from the CG datum are negative forward and positive aft. See
Figure 6.3 for the noted locations.
When expressing the airplane CG in percentage of Standard Mean Chord (SMC), use the
following equation:
Using Feet
Using Meters
CG in % SMC = (X + 1.308) x 100
CG in % SMC = (X + 0.399) x 100
7.263
2.214
Where X is the airplane CG, 1.308 feet or 0.399 meters is the arm of the SMC leading edge
and 7.263 feet or 2.214 meters is the length of the SMC.
As an example, using the CG datum where X = 0, the % SMC is calculated as follows:
Using Feet
Using Meters
(0 + 1.308) x 100 = 18% SMC
(0 + 0.399) x 100 = 18% SMC
7.263
2.214
For Training Purposes Only