section
VI
Wt
&
Bal/Equip
List
BEECH
CRAFT
Duchess
76
6. The airplane is placed
on
the scales in level attitude.
Leveling is
accomplished
with a
spirit
level on the aft bag-
gage
compartment
floor.
Leveling while
on
weighing
points
may require
the
nose gear
shock
strut
to
be secured
in the static
position
to
prevent its extension. Wheel
weigh-
ings
can be leveled
by
deflating
the
nose gear
shock
strut
and/or
tire.
7. Measurement
of
the reaction arms for awheel weighing
is made using
the
wing
jackpoint atF.S. 129.37forajigpoint.
Whiletheairplane is level on thescales, linearmeasurements
are taken from the reference (a plumb bob hanging from
the
center
of
either
wing
jack
point)
to
the
axle centerline
of
the
main gear and then from the main wheel axle centerline
to
the
nose gearaxle centerline. The main wheel axle centerline
is best located by stretching a string from one wheel
to
the
other. All measurements are
to
be taken with the tape level
with the
floor
and parallel to fuselage water lines. The loca-
tion
of
the wheel reactions will be approximately at
F.S.
132
for
the
main wheels and
F.S.
47
for
the
nose wheel.
8.
The
wing
and fuselage weighing points are used by
placing scales on
the
points
as
specified
in
Step
1.
Since
the
center
of
gravity
of
the airplane will be forward
of
the
weigh-
ing pointsat F.S. 129.37, the tail reaction ofthe rear weighing
point at
F.S.
278.61 will be in
an
up direction. This can be
measured
on
regular scales by placing ballast
of
approxi-
mately
400
pounds
on
the scale
to
which the rear weighing
point adapter is attached by cable
or
adjustable chain (may
be used for leveling). The up reaction will
be
the total ballast
weight minus
the
scale reading and is entered in the
weigh-
ing
form
as
a negative quantity.
9.
The basic
empty
weightand
moment
are determined
on
the basic empty
weight
and balance form. Items weighed
)
i
6-4
January
1978
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