Cessna SKYHAWK - Electrical and Radio System Diagrams; Electrical System Schematic; Radio Selector Switch Operation

If
erroneous
instrument
readings
are suspected
due to water or
ice
in
the static
pressure
lines,
the static pressure
alternate
source valve
ELECTRICAL
SYSTEM SCHEMATIC
should
be
opened, thereby supplying static
pressure
from
the
cabin.
Cabin
pressures
will
vary,
however,
with open cabin
ventilators or
win-
TO CIGAR
LIGHTER
dows.
The most
adverse
combinations will
result in
airspeed and
alti-
so
(WITH
CIRCUIT
BREAKER)
meter VRTÍRíÎOns of no more than 2
MPH
and 15
feet, respectively.
REGULATOR
INST
TO
FUEL
QUANTITY
INDICATORS
25
TO
LANDING
&
TAXl
GEN
LAND LT
LIGHTS
(OPT)
I
TO
DOOR
POST MAP
LIGHT
(OPTj
ALTERNATOR
ALTRERUNATORREAF
EELRD
INis
LT
T
NOMERUMEONT
&COURTESY
SWITCH
TCOOM
SO5N
URN
RADIO
SELECTOR SWITCHES
COORDINATOR
OR OPTIONAL
TURN
&
BANK
INDICATOR
CON
AART
a
AMMETER
-
TO
NAN
GO
TNARL
RHTSSWITCH
R
A D
I
O
SELECTOR
SW
I
TCH OPER A T
I
O
N.
REVERSE
GROUND
to
POLARITY
SERVICE
TO CONTROL WHEEL
CONTACTOR
PLUG
NAV LT
MAP
LIGHT (OPT)
Operation of the
radio
equipment is
normal as
covered in the
respec-
.
RECEPTACLE
TO
WING FLAP
tive
radio
manuals. When more than
one
radio is
installed,
an audio
-
I
-
PoslTION INDICATOR
Switching
system is necessary. The
operation
of this
switching
system is
to
TO PITOT
HEAT SYSTEM
described
below.
PITOT HT
|OPT)
15 TO WING FLAP
SYSTEM
-
SPLIT
BUS
STARTER
-
_-
CONTACTOR
FLAP
(NORMALLY
BATTERY
[LOOCK
CLOSED)
10
TO
FLASHING BEACON
RADIO SELECTOR
SWITCHES
CONTACTOR
BCN
(OPT|
TO
RADIO |OPT
AUTOPILOT-OMNI
SWITCH
+
OIL PRESSURE
RADIO 4
SWITCH
|OPT
TO RADIO (OPT|
TO
RADio 3
1 -
SPEAKER
, i
BATTERY
FL RHOUR
L
B
ECR
RADIO•-TO
RADIO
(OPT
-
2 COM
i
NAV
1
CC
M 2
i
NAV
2
DME
ADF
2
----CODE----
To RADio
(OPTI
TRANS
*
PHONES
- '
OMNl
RADIO I
)
CIRCU1T
BREAKER
TO AUTOMATIC PILOT
(OPT)
FUSE
¡NA
TORN
_
AUTOPILOT
SPEAKER-PHONE
SWITCH
(TYPICAL)
DIODE
SWITCH
TO
AUDIO AMPLIFIER
|OPT
TRANSMITTER
SWITCHES CONTROL
SPEAKER-PHONE
-
CAPACITOR
AUD AMP
SELECTOR SWITCH
FUNCTION OF
COMMUNICATION AND
NAVIGATION
EQUIPMENT IN
RADIO
RES15TOR
MAGNETos.
STAcr ON
INSTRUMENT PANEL
Figure
2-3.
Figure
6-1.
2-4
6-3