SOLOY TURBINE PAC SECTION 1
POHS CESSNA T206H/206H GENERAL
1-10
F.A.A. Approved May 23, 2003
WEIGHT AND BALANCE TERMINOLOGY
Reference Datum is an imaginary vertical plane from
which all horizontal distances are measured for
balance purposes.
Station is a location along the airplane fuselage given
in terms of the distance from the reference datum.
Arm is the horizontal distance from the reference
datum to the center of gravity (C.G.) of an item.
Moment is the product of the weight of an item
multiplied by its arm. (Moment divided by the constant
1000 is used in this handbook to simplify balance
calculations by reducing the number of digits.)
Center of Gravity is the point at which an airplane or
equipment, would balance if suspended. Its distance
from the reference datum is found by dividing the total
moment by the total weight of the airplane.
Center of Gravity Arm is the arm obtained by adding
the airplane’s individual moments and dividing the sum
by the total weight.
Center of Gravity Limits are the extreme center of
gravity locations within which the airplane must be
operated at a given weight.
Standard Empty Weight is the weight of a standard
airplane, including unusable fuel, full operating fluids
and full engine oil.
Basic Empty Weight is the standard empty weight
plus the weight of optional equipment.
Useful Load is the difference between ramp weight
and the basic empty weight.
Maximum Ramp Weight is the maximum weight
approved for ground maneuver. (It includes the weight
of start, taxi and run-up fuel.)
MAC (Mean Aerodynamic Chord) is the chord of an
imaginary rectangular airfoil having the same pitching
moments throughout the flight range as that of the
actual wing.
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