2. BATT switch OFF (monitor loadmeter).
IF LOADMETER STILL INDICATES ABOVE 100%:
3. Nonessential electrical equipment off.
IF LOADMETER INDICATES 100% OR BELOW:
4. BATT switch ON.
d. INVERTER Light Illuminated. Illumination of
the #1 or #2 INVERTER caution light indicates failure
of the affected inverter. When either inverter fails, the
total ac load is automatically switched to the remaining
inverter. When a #1 or #2 INVERTER light illuminates,
perform the following:
1. Affected INVERTER switch OFF.
e. INST AC Light Illuminated. Illumination of
the INST AC warning light indicates that both 26-Vac
transformer circuits are inoperative. The primary
power-indicating instruments, torque, and fuel flow will
be inoperative. Under these conditions, power must
be controlled by indications of the N1 and TGT gauges.
Perform the following:
1. N1 and TGT indications Check.
2. Other engine instruments Monitor.
f. Circuit Breaker Tripped. If the circuit
breaker is for a nonessential item, do not reset in flight.
If the circuit breaker is for an essential item, the circuit
breaker may be reset once. If a bus feeder circuit
breaker (on the overhead circuit breaker panel) trips, a
short is indicated. Do not reset in flight. If a circuit
breaker trips, perform the following:
1. BUS FEEDER breaker tripped Do not
2. Nonessential circuit Do not reset.
3. Essential circuit Reset once.
Circuit breakers should not be reset more
than once until the cause of circuit
malfunction has been determined and
corrected. Do not reset dual-fed bus
feeder circuit breakers.
g. BATTERY CHARGE Light Illuminated. If
the BATTERY CHARGE caution light illuminates
during normal flight, perform the following procedure.
1. Loadmeter Check and note indication.
2. BATT switch OFF.
indicates less than 2.5% change (one
needle width), turn BATT switch ON and
monitor for increasing load. If load
continues to increase, turn BATT switch
The battery may be turned back ON only
for gear and flap extension and approach
to landing. Battery may be usable after a
15 to 20-minute cool down period.
4. BATT switch (landing gear/flap extension
Failure. If the AVIONICS MASTER POWER switch
fails to operate in the ON position, perform the
The avionics power relay is normally hot.
Pulling the AVIONICS MASTER CONTR
circuit breaker will remove power to the
relay, thus allowing electrical power to the
9-29. EMERGENCY DESCENT.
Emergency descent is a maximum effort in which
damage to the aircraft must be considered secondary
to getting the aircraft down. The following procedure
assumes the structural integrity of the aircraft and
smooth flight conditions. If structural integrity is in
doubt, limit speed as much as possible, reduce rate of
descent if necessary, and avoid high maneuvering
loads. For emergency descent, perform the following:
1. POWER levers IDLE.
2. PROP levers HIGH RPM.
3. FLAPS APPROACH.
4. GEAR DN.
5. Airspeed 181 KIAS maximum.