CESSNA AIRCRAFT COMPANY FOR TRAINING USE ONLY
MODEL 152 7-22
CIRCUIT BREAKERS AND FUSES
Most of the electrical circuits in the airplane are protect by “push-to-reset” circuit breakers mounted
under the engine controls on the instrument panel. The cigar lighter is equipped with a manually-reset
type circuit breaker located on the back of the lighter and a fuse behind the instrument panel. The
control wheel map light (if installed) is protected by the NAV/DOME circuit breaker, and a fuse behind
the instrument panel. Electrical circuits which are not protected by circuit breakers are the battery
contactor closing (external power) circuit, clock circuit, and flight hour recorder circuit. These circuits
are protected by fuses mounted adjacent to the battery.
GROUND SERVICE PLUG RECEPTACLE
A ground service plug receptacle may be installed to permit the use of an external power source for cold
weather starting and during lengthy maintenance work on the electrical and electronic equipment. The
receptacle is located behind a door on the left side of the fuselage near the aft edge of the cowling.
Just before connecting an external power source (generator type or battery cart), the master switch
should be turned ON. This is especially important since it will enable the battery to absorb transient
voltages which otherwise might damage the transistors in the electronic equipment.
The battery and external power circuits have been designed to completely eliminate the need to
“jumper” across the battery contactor to close it for charging a complete “dead” battery. A special
fused circuit in the external power system supplies the needed “jumper” across the contacts so that
with a ‘dead” battery and an external power source applied, turning the master switch ON will close the
battery contactor.
LIGHTING SYSTEM
EXTERIOR LIGHTING
Conventional navigation lights are located on the wing tips and top of the rudder, a single landing light is
installed in the cowl nose cap, and a flashing beacon is mounted on top of the vertical fin. Additional
lighting is available and includes dual landing/taxi lights in the cowl nose cap and a strobe light on each
wing tip. All exterior lights are controlled by rocker type switches on the lower left side of the
instrument panel. The switches are ON in the up position and OFF in the down position.
The flashing beacon should not be used when flying through clouds or overcast; the flashing light
reflected from water droplets or particles in the atmosphere, particularly at night, can produce vertigo
and loss of orientation.
The high intensity strobe lights will enhance anti-collision protection. However, the lights should be
turned off when taxiing in the vicinity of other airplanes, or during night flight through clouds, fog or
haze.
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