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Hangar Flying

Weight and Balance Calculator

The aircraft

The weighing

Level, tanks empty, a calibrated scale under each wheel (AC 90-89C 2.13). Leave these empty to enter the empty weight and CG instead.

Scale (lb)Tare (lb)Arm (in.)
Left main
Right main
Nose or tail wheel
Unusable fuel (gal)

The envelope

Its corners from the kit manufacturer’s weight and balance data, in order around the envelope. Without them, the forward and aft limits and the gross weight make a rectangle.

CG (in.)Weight (lb)
1
2
3
4
5
6
7
8

A second category’s envelope, if any

CG (in.)Weight (lb)
1
2
3
4
5
6

The loading

Pilot
Passenger
Fuel
Baggage
Other

Fuel at 6 lb a gallon. Arms in inches aft of the datum.

The answer

Enter the weighing, or the empty weight and its CG, then the loading.