Cessna 152 - Airplane Weighing Procedures

CESSNA
MODEL
152
SECTION6
WEIGHT
&
BALANCE/
EQUIPMENT
LIST
INTRODUCTION
This
section
describes
the
procedure
for
establishing
the
basic
empty
weight
and
moment
of
the
airplane.
Sample
forms
are
provided
for
refe,:ence.
Procedures
for
calculating
the
weight
and
moment
for
various
operations
are
also
provided.
A
comprehensive
list
of
all
Cessna
equip-
ment
available
for
this
airplane
is
included
at
the
back
of
this
section.
It
should
be
noted
that
specific
information
regarding
the
weight,
arm,
moment
and
installed
equipment
list
for
this
airplane
can
only
be
found
in
the
appropriate
weight
and
balance
records
carried
in
the
airplane.
It
is
the
responsibility
of
the
pilot
to
ensure
that
the
airplane
is
loaded
properly.
AIRPLANE
WEIGHING
PROCEDURES
1.
Preparation:
a.
Inflate
tires
to
recommended
operating
pressures.
b.
Remove
the
fuel
tank
sump
quick-drain
fittings
and
fuel
line
drain
plug
to
drain
all
fuel.
c.
Remove
oil
sump
drain
plug
to
drain
all
oil.
d.
Move
sliding
seats
to
the
most
forward
position.
e.
Raise
flaps
to
the
fully
retracted
position.
f.
Place
all
control
surfaces
in
neutral
position.
2.
Leveling:
a.
Place
scales
under
each
wheel
(500#
minimum
capacity
for
scales).
b.
Deflate
nose
tire
and/
or
lower
or
raise
the
nose
strut
to
center
bubble
on
level
(see
figure
6-1).
3.
Weighing:
a.
With
the
airplane
level
and
brakes
released,
record
the
weight
shown
on
eac~
scale.
Deduct
the
tare,
if
any,
from
each
reading.
4.
Measuring:
a.
Obtain
measurement
A
by
measuring
horizontally
(along
the
airplane
center
line)
from
a
line
stretched
between
the
ma.in
wheel
centers
to
a
plumb
bob
dropped
from
the
firewall.
b.
Obtain
measurement
B
by
measuring
horizontally
and
paral-
lel
to
the
airplane
center
line,
from
center
of
nose
wheel
axle,
left
side,
to
a
plumb
bob
dropped
from
the
line
between
the
main
wheel
centers.
Repeat
on
right
side
and
average
the
measure-
ments.
5.
Using
weights
from
item
3
and
measurements
from
item
4,
the
airplane
weight
and
C.G.
can
be
determined.
6.
Ba.sic
Empty
Weight
may
be
determined
by
completing
figure
6-1.
1
July
1978
6-3