Mooney M20R - Common Structural Laminate Repair (Fiberglass-Resin Combination)

SERVICE
AND
MAINTENANCE
MANUAL
M20R
MOONEY
AIRCRAFT CORPORATION
5.
Place
rigid
aluminum
plates
on
both
sides
of
may
be
repeated
to
acquire
a
satisfactory
surface
repair
area
and
clamp
into
place
with
"C"
clampts.
Per-
finish.
mit
laminated
repair
to
cure.
51-15-04
COMMON
STRUCTURAL
6. After
fiberglass
repair
has
cured,
remove
c~lamps
LAMINATE
REPAIR
(FIGURE
51-22)
and install
#3
AN426A
rivets. Flush
heads
to
be
on
(FIBERGLASS-RESIN
COMBINATION)
finished
surface side. Number
of
rivets
and
spaci~g
will
be determined
by
size of
repair.
1.
Apply
wet
coat
of
catalyzed
epoxy
resin
to
cham-
7.
Apply
one
additional
overlapping
layer
o~i
#181
fered
surface.
fiberglass
cloth
on
non-finished
surface
and
in
2.
Apply
one
layer
of
#181
fiberglass
cloth saturated
place.
Should
opposite
side be
a
non-finished
s~rface,
With
catalyzed
epoxy
resin.
an
additional
layer
of
fiberglass
should
be
applied
to
3´•
Add
additional
plys
of
#181
fiberglass
cloth
this side.
saturated
with
epoxy
resin
to attain
original
laminate
8.
Upon completion
of
steps
1
thru
7,
permitirepair
thickness.
to
cure
before
attempting
further
treatment
~f
ap-
4´•
Apply
one
layer
of
#181
fiberglass
cloth
to
the
pearance
surfaces,
if
required.
non-finished
side of
laminate,
extending
1/2"
each side
9.
Appearance
surfaces
will
normally
require albplica-
Of
the chamfer
and
bond
in
place.
tion
of
a
filler-sealer
coating. Appearance
area
is/
to
be
5.
Lay
wax
paper
over
both
sides
of the
repaired
wiped
clean,
using
a
clean cloth
saturated
with
fUI.E.K.
a’ea
while
still
wet.
This
prevents
adhesion
to
the
pres-
prior
to
applying
filler-sealer
coating.
sure
clamp
application
(paragraph
6).
10.
Mix
epoxy
resin and
catalyst
per
manufabturers
6.
Place
rigid
aluminum
plates
on
both sides
of
specifications
and
apply
to
appearance
surfacei
area.
repair
area
and
clamp
into
place
with
"C"
clamps.
Ber-
Care
should be
taken
to
assure
as
smooth
as
p0ssible
mit
laminate
repair
to
cure.
surface
in
this
particular
operation.
7.
After
fiberglass
repair
has
cured,
remove
clamps
Permit this
surfacing
coat to
cure
prior
to
any
adidition-
a"d install
#3
AN426
rivets.
Flush
head
to
be
on
al
applications
or
further
rework.
finished
surface
side.
The
number
of rivets
and
spacing
11.
Using
#240
sandpaper,
sand and blend
re~aired
Will
be
determined
by
the size
of
the
repair.
area
to
match
surrounding
surface.
Steps
10
alnd
11
8.
Upon
completion
of
steps
1
thru
7,
allow
repair
to
cure
before
attempting
further
treatment
of
appearance
surface.
5TOP DRILL
I´•
I
I
´•I
I.....
i.
CRACK
--"f
i.
CHAMFERED
I--
SURFACE
...I
GLASS
PATCH
OUTLINE
1----
1.6.
---1---
IS
---I
NON-FINISHED
SURFACE
CRACK
1
FINISHED
SURFACE
CHAMFEREACH
SIDE
(NP.)1
CKNESS
.02
TO
.04
;c0.5Q
-L;
4--0.50
O
(FIBERGLASSIRESIN
COMBINATION~
SM51-22
COMMON
STRUCTURAL
LAhAINATE
REPAIR-FIGERGLASS/RESIN-FIG.51
-22
51-15-04
20
Island Enterprises