CESSNA
MODEL 172R (180 HP)
SECTION 3
EMERGENCY PROCEDURES
ELECTRICAL POWER SUPPLY SYSTEM
MALFUNCTIONS
AMMETER SHOWS EXCESSIVE RATE OF CHARGE
(Full Scale Deflection)
1. Alternator -- OFF.
AcAUTION
WITH THE ALTERNATOR SIDE OF THE MASTER
SWITCH OFF, COMPASS DEVIATIONS OF AS
MUCH AS 25
°
MAY OCCUR.
2. Nonessential Electrical Equipment -- OFF.
3. Flight -- TERMINATE as soon as practical.
LOW VOLTAGE ANNUNCIATOR (VOLTS) ILLUMINATES DURING
FLIGHT
(Ammeter Indicates Discharge)
NOTE
Illumination of "VOL TS" on the annunciator panel may
occur during low RPM conditions with an electrical load on
the system such as during a low RPM taxi. Under these
conditions, the annunciator will go out at higher RPM. The
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master switch need not be recycled since an overvoitage
condition has not occurred to deactivate the alternator
system.
1. Avionics Master Switch -- OFF.
2. Alternator Circuit Breaker (ALT FIELD) -- CHECK IN.
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3. Master Switch -- OFF {both sides).
4. Master Switch -- ON.
5. Low Voltage Annunciator (VOL TS) -- CHECK OFF.
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6. Avionics Master Switch -- ON.
Oct 4/01
3-11
j
Summary of Contents for 172R180HP
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Page 156: ...J WEIGHT BALANCE n EQUIPMENT LIST J...
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Page 187: ...AIRPLANE SYSTEMS DESCRIPTIONS...
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