Beechcraft C-12C Operator And Technical Reference Manual page 871

To reset, turn off approximately 5 seconds,
then to the NIGHT (red) position.
voltage drops below approximately 20
volts, the anticollision light may become
inoperative. Normally, NIGHT (red) strobe
is used for ground operations and DAY
(white) is used for flight operations.
8A-24. ABORT START.
1. CONDITION lever – FUEL CUTOFF.
2. IGNITION AND ENGINE START switch –
STARTER ONLY.
3. ITT/TGT – Monitor for drop in temperature.
4. IGNITION AND ENGINE START switch –
OFF.
8A-25. ENGINE CLEARING.
1. CONDITION lever – FUEL CUTOFF.
2. IGNITION AND ENGINE START switch –
OFF (1-minute minimum).
CAUTION
Do not exceed
40 seconds on and 60 seconds off for two
starting attempts.
before additional starter operation.
3. IGNITION AND ENGINE START switch –
STARTER ONLY (15 seconds minimum, 40
seconds maximum).
4. IGNITION AND ENGINE START switch –
OFF.
* 8A-26. FIRST ENGINE START (GPU START).
When making a Ground Power Unit (GPU) start,
the left engine should be started first due to the GPU
receptacle being located adjacent to the right engine.
Normally, only one engine is started utilizing the GPU,
reverting to the Battery Start procedure for the second
engine start.
NOTE
When
starter limitation
Allow 30 minutes off
Never connect an external power source to
the aircraft unless a battery indicating a
charge of at least 20 volts is in the aircraft.
If the battery voltage is less than 20 volts,
the battery must be recharged or replaced
with a battery indicating at least 20 volts
before connecting external power.
only an external power source fitted with
an AN-type plug.
The BATT switch must be OFF prior to
connecting an auxiliary power unit. An EXTERNAL
POWER annunciator alerts the crew when an external
power plug is connected to the aircraft.
If the battery is partially discharged, the
BATTERY
illuminate approximately 6 seconds after
external
annunciator does not extinguish within
5 minutes, refer to the BATTERY CHARGE
Light Illuminated procedure, Paragraph
9-28d.
1. BATT switch – OFF.
of
2. GPU – Connect.
3. EXTERNAL POWER advisory light – On.
4. BATT switch – ON.
5. EXTERIOR
required.
6. Propeller – Clear.
7. Engine – Start.
a. IGNITION AND ENGINE START switch
If ignition
10 seconds after moving the condition
lever to LOW IDLE, initiate Engine Clearing
procedure, Paragraph 8A-25.
reason
discontinued, the entire starting sequence
must be repeated after allowing the engine
to come to a complete stop (1-minute
minimum).
b. CONDITION lever (after N
TM 1-1510-218-10
CAUTION
NOTE
CHARGE annunciator
power is on-line.
LIGHTS switches
– ON. IGN ON light illuminated and
associated. FUEL
extinguished.
CAUTION
does not occur
the starting attempt
or above 12% for 5 seconds) – LOW
IDLE.
Use
will
If the
– As
PRESS light
within
If for any
is
stabilizes at
1
8A-11