Cessna 402C - Page 18

I
SECTION 1
GENERAL
WEIGHT AND BALANCE TERMINOLOGY
Arm
Basic
'-<~O-_'C'
Empty Weight
C.G. Arm
C.G. Limits
~
Center of
Gravity (C.G.)
Jack Point
~
MAC
Maximum
Landing Weight
Maximum
Ramp Weight
Maximum
Takeoff Weight
Maximum Zero
Fuel Weight
Moment
Payload
Reference
Datum
The horizontal distance from the reference datum to the
center of
gravity (C.G.) of an item.
Standard empty weight plus installed optional equipment.
The arm obtained by adding the airplane's individual
moments and dividing the sum by the total weight.
The extreme center of gravity locations within which the
airplane must be operated at a given weight.
The point at which an airplane would balance if sus-
pended.
Its distance from the reference datum is found
by dividing the total moment by the total weight of the
airplane.
One of the three points on the airplane designed to rest
On a jack.
The mean aerodynamic chord of a wing is the chord of an
imaginary airfoil which throughout the flight range will
have the same force vectors as those of the wing.
Maximum weight approved for the landing touchdown.
Maximum weight approved for ground maneuver. (It
includes weight of start, taxi and run up fuel.)
Maximum weight approved for the start of the takeoff
run.
Maximum weight exclusive of usable fuel.
The product of the weight of an item multiplied by its
arm. (Moment divided by a constant is used to simplify
balance
calculations by reducing the number of digits.)
Weight of occupants, cargo and baggage.
An imaginary vertical plane from which all horizontal
distances are measured
for balance purposes.
. _-
Residual Fuel
,
,
Standard
Empty Weight
1 November 1979
The undrainable fuel remaining when the airplane is
defueled in a specific attitude by the normal means and
procedures specified for draining the tanks .
Weight of a standard airplane including unusable fuel.
full operating fluids and full oil.
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