Raytheon Beech Baron E55 - Page 172

RBylheOn
Aircraft
Company
BARON
55
AND
58
SHOP
MANUAL
WING
MAIN
SPAR CAP VISUAL
INSPECTION
The
wing
spar
cap
must
be
inspected
for
corrosion
annually.
WARNING:
All
areas
of the
wing
main
spar
caps,
from
the
wing
attach
fitting
to
the
outboard
end
of
the
spar
cap,
must
be
inspected.
Kit 58-4002-1
contains
the
parts
and
instructions
necessary
to
install
a
new
LH
and
RH
spar
on
the
model
55
and
58 series
wing panels.
The kit
does
not
contain the
spars
which
must
be
ordered
separately.
NOTE:
Special
emphasis
should
be
placed
on
airplanes
that
have been
operated
or
stored
for
extended
periods
(5
years
or
longer)
in
geographical
locations where
atmospheric
conditions
are
highly
conducive
to
corrosion.
Inspection
of
the
upper
and lower
spar
caps
should
be
accomplished
in
the
following
manner:
a.
Examine the forward
and
aft sides of
the
spar
cap
where
it
meets
the skin.
If
a
whitish, saltlike,
nonmetallic
substance is
noted,
a
thorough inspection
must
be
performed
to
determine
if
corrosion
has occurred. Wax
or
paint trapped
between the
edge
of the
skin and the
exposed
section
of
the
spar
cap
should
not
be
misinterpreted
I
as
corrosion
(Ref. Figure 14).
NOTE:
To
gain
access
to
the
upper
spar
cap
in
the
nacelle
area,
remove
the
shaded
panels
shown in
Figure
15.
b.
Wash
all
exposed
areas
of the
upper
and lower
spar
caps.
c.
Visually inspect
all
exposed
areas
of
the
upper
and lower
spar
caps
for
irregularities,
such
as
paint
blisters,
raisdd
or uneven
areas,
and
cracks.
The
exposed
areas
of
the
spar
caps
are
extruded flat
and
irregularities
could
be
an
indication
of
corrosion.
Thoroughly
investigate
all
irregular
areas
to
determine if
any
damage
has
occurred.
NOTE:
Uneven
or
raised
areas on
the
spar caps may
be
detected
by
sliding
the
fingers
over
the
surface,
by
moving
I
a
straight edge
over
the
surface,
or
by sighting
down the
length
of the
spar
cap
surface.
If
unusual
conditions
are
encountered
that
cannot
be resolved
locally,
contact
the
Technical
Support
Department
at
Raytheon
Aircraft
Company
for
evaluation
and
determination of
corrective action that
may
be
required.
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