FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 10. Weight and Balance | 2. Weighing Procedures | 10-17. Weight and Balance Extreme Conditions
9/8/98
AC 43.13-1B
TO CHECK: MOST FORWARD WEIGHT AND BALANCE EXTREME.
GIVEN:
Actual empty weight of the aircraft -------------------------------------------------------------------------- 1169#
Empty weight center of gravity------------------------------------------------------------------------------- + 10.6”
*Maximum weight---------------------------------------------------------------------------------------------- 2100#
*Forward C.G.. limit ------------------------------------------------------------------------------------------- + 8.5”
*Oil capacity, 9 qts. -------------------------------------------------------------------------------------------- 17# at -49”
*Pilot in farthest forward seat equipped with
controls (unless otherwise placarded) -----------------------------------------------------------------------170# at +16”
*Since the fuel tank is located to the rear of the
forward C.G. limit, minimum fuel should be included.
METO HP = 165 = 13.75 gal. x 6#-------------------------------------------------------------------------- 83# at +22”
12
12
* Information should be obtained from the aircraft specification.
Note: Any items or passengers must be used if they are located ahead of the forward C.G. limit.
Full fuel must be used if the tank is located ahead of the forward C.G. limit.
CHECK OF FORWARD WEIGHT AND BALANCE EXTREME
Weight (#) x Arm (“) = Moment (“#)
Aircraft empty
+ 1169
+ 10.6 + 12391
Oil
+ 17
- 49
- 833
Pilot
+ 170
+ 16
+ 2720
Fuel
+ 83
+ 22
+ 1826
Total
+ 1439 (TW)
+ 16104 (TM)
Divide the TM (total moment) by the TW (total weight) to obtain the forward weight and balance extreme.
TM = 16104 = + 11.2”
TW
1439
Since the forward C.G. limit and the maximum weight are not exceeded, the forward weight and balance
extreme condition is satisfactory.
FIGURE 10-10. Example of check of most forward weight and balance extreme.
Par 10-16
Page 10-13