TM 1-1510-225-10
8A-11
CAUTION
Monitor ITT to avoid a hot start. If there is
a rapid rise in ITT, be prepared to abort the
start before limits are exceeded. During
starting, the maximum allowable ITT is
1000 °C for 5 seconds. If this limit is
exceeded, use Abort Start procedure,
Paragraph 8A-24, and discontinue start.
Enter the peak temperature and duration
on DA Form 2408-13-1.
d. ITT and N1 – Monitor. ITT 1000 °C
maximum. N1 minimum 58%.
e. Oil pressure – Check (60 psi minimum).
f. IGNITION AND ENGINE START switch –
OFF after 50% N1.
4. Engine and systems instruments – Check.
5. BATTERY CHG annunciator – Check.
6. INVERTER switch – ON, check INVERTER
lights OFF.
a. Check the operation of the INVERTER to
be used as the standby INVERTER, then
OFF; turn ON the INVERTER to be used
for the flight.
7. Second engine GEN switch – RESET, then
ON.
a. AC/DC power – Check frequencies, volts
and loads.
b. Frequency and volts:
(1) AC frequency 390 Hz to 410 Hz.
(2) AC voltage – 110 Vac to 120 Vac.
(3) DC voltage – 27.5 to 29.0 Vdc.
c. DC loads: Parallel within 10%.
(1) 75% maximum – Low Idle.
(2) 85% maximum – High Idle.
(3) 85% maximum – Ground Operations.
8. CONDITION levers – As required.
9. RED ANTICOLLISION light – Reset.
NOTE
To reset, turn off approximately 5 seconds,
then to the NIGHT (red) position. When
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 – 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 starter limitation of
40 seconds on and 60 seconds off for two
starting attempts and Engine Clearing
procedure, Paragraph 8A-25. Allow 30
minutes off 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 GPU start, the left engine should
be started first due to the GPU receptacle's being
located adjacent to the right engine. Normally, only
one engine is started using the GPU, reverting to a
battery start procedure for the second engine start.
