Beechcraft C-12C Operator And Technical Reference Manual page 872

TM 1-1510-218-10
CAUTION
Monitor ITT/TGT to avoid a hot start.
there is a rapid rise in ITT/TGT, be prepared
to abort the
exceeded. During
maximum allowable ITT/TGT is 1000 °C for
5 seconds. If this limit is exceeded,
discontinue start and use Abort Start
procedure, Paragraph 8A-24.
peak temperature and duration on DA
Form 2408-13-1.
c. ITT/TGT and N
1000 °C maximum. N
d. Oil pressure – Check (60 psi minimum).
e. IGNITION AND ENGINE START switch
– OFF after 50% N
decreasing.
8. Engine and systems instruments – Check.
9. CONDITION lever – HIGH IDLE. Monitor
ITT/TGT as the condition lever is advanced.
10. GPU disconnect – As required.
CAUTION
Do not turn on generators with GPU
connected.
11. GEN switch – RESET then ON.
12. BATTERY CHARGE light – Monitor.
After starting the first engine with a GPU,
the second engine is normally started
using a battery start.
required or desired for the second engine
start, use the Second Engine Start (GPU
Start) procedure,
otherwise, use the Second Engine Start
(Battery Start) procedure, Paragraph 8A-23.
* 8A-27. SECOND ENGINE START (GPU START).
1. Propeller area – Clear.
2. Engine – Start.
a. IGNITION AND ENGINE START switch
– ON. IGN ON light illuminated and the
associated
extinguished.
8A-12
start before limits
engine start,
Record the
– Monitor ITT/TGT
1
minimum 56%.
1
and ITT/TGT
1
NOTE
If a GPU start is
Paragraph 8A-27;
FUEL PRESS
If If ignition
10 seconds after moving condition lever to
are low idle,
the procedure, Paragraph 8A-25.
reason a starting attempt is discontinued,
the entire starting sequence must be
repeated after allowing the engine to come
to a complete stop (1-minute minimum).
b. CONDITION
Monitor ITT/TGT to avoid a hot start.
there is a rapid rise in ITT/TGT, be prepared
to abort
exceeded.
maximum allowable ITT/TGT is 1000 °C for
5 seconds.
discontinue start and use Abort Start
procedure, Paragraph 8A-24.
peak temperature and duration on DA
Form 2408-13-1.
c. ITT/TGT and N
d. Oil pressure – Check 60 psi minimum.
e. IGNITION AND ENGINE START switch
3. Engine and systems instruments – Check.
4. Right PROP lever – FEATHER.
5. GPU – Disconnect.
6. Right PROP lever – HIGH RPM.
7. INVERTER
INVERTER lights OFF.
8. GEN switches – RESET, then ON.
a. AC/DC power – Check frequencies, volts
b. Frequency and Volts:
light
c. DC loads: Parallel within 10%.
CAUTION
does not occur
initiate Engine
lever (after
stabilizes at or above
5 seconds) – LOW IDLE.
CAUTION
the start before
During engine
If this limit is exceeded,
– Monitor.
1
1000 °C maximum. N minimum 56%.
1
– OFF after 50% N
decreasing.
switches –
and loads.
(1) AC frequency 394 to 406 Hz.
(2) AC voltage – 104 to 124 Vac.
(3) DC voltage – 28.0 to 28.5 Vdc.
(1) 75% maximum – LOW IDLE.
within
Clearing
If for any
N RPM
1
12% for
If
limits are
start, the
Record the
ITT /TGT
and ITT/TGT
1
ON, check