Cessna 172N - Page 13

SECTION 1
GENERAL
CESSNA
MODEL
172N
Arm
Arm
is
the horizontal
distance from
the reference dahrm
to
Tfre-center
of
gravity (C.
G.
)
of an
item.
Moment
Moment is the
product
of the
weight
of
an
item
multiplied
by
iis arrn-
(Moment
divided by
the
constant
1000 is
used
in
this
handbook
to
simplify
balance
calculations
by reducing
the
number
of
digits.
)
Center of Center of
Gravity is
the
point
at
which
an
airplane,
or
equip-
Gravity
@ce
if
suspended.
Its distance
from
the
(C.
G.
)
reference
datum is found by
dividing
the total moment
by the
total
weight
of
the airplane.
C. G.
Center
of
Gravity
Arm is the arm
obtained
by
adding the
Arm
@oments
and
dividing
the
sum
by
the
total
weight.
C. G.
C"nt"-" of G"*ityli are
the extreme
center of
gravity
Limits
airplane
must
be
operated at a
given
weight.
StandardSt@istheweightofastandardairpIane,
Empty
@
fuII
operating
fluids
and
full engine
Weight
oil.
Basic Empty
Basic
Empty Weight is
the
standard
empty weight
plus
the
Weight
weight of
optional
equipment.
Useful
Useful
Load is
the difference
between takeoff
weight and
the
Load
Effipitweight.
Gross
Gross
(Loaded)
Weight
is the loaded
weight
of the
airplane.
(Loaded)
Weight
Maximum
Maximum
Takeoff
Weight is the
maximum
weight
approved
Takeoff
run.
Weight
Maximum
Ma.lcimum Landing
Weight
is the
ma:<imum weight approved
Landing
Weight
Tare
Tare
is the weight
of chocks, blocks, stands,
etc. used
iffiin weighing
an airplane, and
is included
in the
scale
read-
ings.
Tare
is
deducted
from
the scale
reading
to
obtain
the
achral
(net)
airplane
weight.
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