Mooney M20K - Annunciator Panel; Emergency Locator Transmitter (ELT) Switch; Instrument and Radio Light Control Box

SERVICE
AND
MAINTENANCE
MANUAL
M20K
MOONEY
AIRCRAFT
CORPORATION
LOW
FUEL
WARNING
CIRCUIT
CALIBRATION.
Refer
to
Section
24-33-00
paragraph
4.
U)G
GEAR
KNURLED
OVERWDE
39-12-02
EMERGENCY
LOCATOR
NUT
FOR
SWITCH
TRANSMITTER
(ELT)
SWITCH
NG~
The
remote
ELT
switch
is
located
at
the
top
of
the
SWITCH
(SOUE
OYERWDE
avionics
panel.
The
ELT
is
located
in
tailcone
and
is
SWTTCHES
accessible
by
removing
radio
access
panel
on
left
side
ARE
LOCATED
of
aircraft
fuselage.
The
ELT
antenna
is
located on
top
aD
BESIDE
SHE
of
tailcone
undemeath
fiberglass
dowal
fin.
The
unit
LDC
GEAR
has a
three
position
switch
"ON",
"OFF"
and
"ARM".
tr!
swrrc~1)
The
corred
position
of
this
switch
is
"ARM".
The
remote
switch
is
connected
in
parallel
to
ELT
circuit
U)G
GEAR
and
will
operate
correctly
either
in
"ARM"
mode or
SELECTOR
"ON"
mode.
Normal
operation
is
in
"ARM"
position.
SWTTCH
Place
the
remote
switch
in
"ON"
position
and
tune
communication
radio
to
121.5
Mhz
to
verify
that a
warbling
tone
is
heard.
Place
remote
switch
back
to
"ARM"
position
for
normal
operation.
VINI-LQOKING
AT
BACK
SIDE
OF
PILOTS
PAE~R
SUX39-5
CAUTION
LANDING
GEAR
SWITCH
LANDING
GEAR
Testing
of
ELT
should
be
conducted
only
SAFETY
OVERRIDE
SWITCH
during
first
five
(5)
minutes
after
any
hour
and
no
longer
than
three
(3)
audible
sweeps.
FIGURE
394
1.
If
warbling
tone
is
not
heard
replacement
of
ELT
CAUTION
battery
or
the
unit
may
be
necessary.
Follow
ELT
Activation
of
gear
safety
override
switch
while
manufactures
instructions
for
battery
replacement.
aircraft
is on
the
ground
may
cause
landing
2.
If
ELT
unit
is
found
to
be
operating
properly
and
gear
to
retract
system
still
will not
work
correctly
through
the
remote
1.
The
landing
gear
switch or
cluster
gauge
will
ELT
switch,
repair
or
replacement
of
switch or
win’ng
require
removal
to
gain
access
for
the
removal
of
Will
be
required.
override
switch.
A.
To
gain
access
to
remote
switch
and
wiring,
2.
Disconnect
wire
connectors,
approximately
6
removal
of
glareshield
will be
required
(refer
to
section
inches
from
switch,
by
cutting
with
wire
cutters
or
3910-01).
opening
knife
disconnects.
B.
Remove
switch
retaining
nut
and
washer
and
3.
Loosen
nut
on
stem
and
hold
nut
located
inside
push
switch
through
face
of
panel.
Disconnect wires,
mounting
bracket
The
red
lensmay
need
to
be
removed
’emove
and
replace
defective
switch.
to
fully
remove
switch
from
panel
and
bracket
C.
Reconned
wires
and
test
switch
for
proper
4.
The
light
bulb
(GE
330,
12
vo~t);
GE
327,
28
volt)
operation.
can
be
replaced
after
glareshield
is
removed
by
D.
Reinstali
glareshield.
bending
a
nail
or
similar
rod
(approximately
3/32"
diameter)
and
pushing
red
lens
off
to
front
of
panel.
NOTE
Use
a
small
vacuum
tube
puller
or
soft
nosed
Other
switches
located
in
ELT
placard
area
of
instrument
to
pull
bulb
from
socket.
avionics
panel
can
be
removed
and
replaced
in
similar
manner.
39-12-00
-AVIONICSIRADIO
PANEL
The
avionics/radio
panel
contains
equipment
installed
39-12-03
INSTRUMENT
AND
RADIO
LIGHT
per
sales
order
by
Mooney
Aircraft
and
other
CONTROL
BOX
equipment
installed
by
other
sources
as
the owner
desires.
The
maintenance
information
contained
in this
The
control
box
for
instrument,
radio
and
glareshield
Service
and
Maintenance
Manual
descn’bes
the
lights
consists
of
two
van’able
meostat switches,
two
transistors,
two
fuses
and
miscellaneous
wiring
Mooney
factory
installation
only.
contained
in
a
metal
box
assembly.
The
light
control
The
avionics/radio
components
are
removed
and
box
for
S/N
250001
thru
25-0246
is
located
at
the
top
installed
according
to
Section
39-10-02,
1
and 2.
of
radio
panel.
The
light
control
box
for
SIN
25-0247
and
ON
is
located
at
the
bottom
of
radio
panel.
The
39-1291
-ANNUNCIATOR
PANEL
transistors
installed
in
M20K
aircraft,
S/N
25-0001
thru
The
annunciator
panel
is
located
at
the
top
of
25-0279,
PM
2N2016,
are
no
longer
being
center-most
avionics/radio
panel
and
is
not
mounted
manufactured.
The
replacement
transistors
are
with
a
slide
in
type
chassis.
Remove
this
component
by
included In
a
spares
modification
kit,
P/N
removing
two
screws
holding
cover
plate
in
position.
919003´•907",
which
includes
a transistor,
resistor,
and
Remove
glareshield
and
disconnect
electrical
harness
instruction
sheet
describing
modification
procedures.
from
back
side
of
unit.
Remove
screws
holding
unit
in
The
kit
will
modify
one
circuit
only,
two
kits
are
place
on
panel
and
remove
from
back
side
of
panel,
required
for
both
circuits.
3912-00
OLDWILLWAYNE