Page I -
12
Weight
and
balance
terminology
Datum
Arm
Moment
C.
G.
Standard Empty Weight
Basic Empty Weight (BEW)
Useful
load
Maximum Takeojf Weight
(MTOW)
Maximum
landing
Weight
(MlW)
"Reference datum"
is
an imaginary vertical
plane from which all horizontal distances are
measured for balance purposes.
is the horizontal distance
of
an item meas-
ured from the reference datum.
is
the product
of
the weight
of
an item mul-
tiplied
by
its arm.
Center
of
Gravity
is
the point at which the
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 aircraft.
is
the weight
of
the aircraft with engine
11
u-
ids and oil at operating levels.
is
the standard empty weight
to
which it
is
added the optional equipment weight.
is
the difference between maximum lakeoff
weight and the basic empty weight.
is
the maximum weight approved to perform
the takeoff.
is
the maximum weight approved for the
landing touchdown (for P2010 it
is
equiva-
lent to the Maximum TakeoffWeight).
Section
1 -
General
2"
d Edition, Rev. 9
ACRONYMS
AND
TERMINOLOGY
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