TM 55-1510-221-10
NOTE
The engines must not be started until
after the INS is placed into the NAV
mode or OFF as required.
Starting procedures are identical for both
engines. When making a battery start, the right
engine should be started first. 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. A crew-
member should monitor the outside observer
throughout the engines start.
1.
Avionics master switch - As required.
2.
Exterior light switches - As required.
3. Propeller - Clear.
4.
Ignition and engine start switch - ON. Pro-
peller should begin to rotate and associated
#1 IGN ON or #2 IGN ON annunciator
light should illuminate. Associated #1 FUEL
PRESS or #2 FUEL PRESS light should
extinguish.
If ignition does not occur within 10 sec-
onds after moving condition lever to
LOW IDLE, initiate engine clearing pro-
cedure. If for any reason a starting
attempt is discontinued, the entire start-
ing sequence must be repeated after
allowing the engine to come to a complete
stop (5 minute minimum).
5. CONDITION lever (after N1 RPM stabi-
lizes, 12% minimum) - LOW IDLE.
Monitor TGT to avoid a hot start. If
there is a rapid rise in TGT, be prepared
to abort the start before limits are
exceeded. During starting, the maximum
allowable TGT is 1000°C for five seconds.
If this limit is exceeded, use ABORT
START procedure and discontinue start.
Enter the peak temperature and duration
on DA Form 2408-13.
6. TGT and N1- Monitor (TGT 1000°C maxi-
mum, N1 52% minimum).
7.
Oil pressure - Check (60 PSI minimum).
8.
Ignition and engine start switch - OFF, after
50% N1.
9. CONDITION lever - HI IDLE. Monitor
TGT as the condition lever is advanced.
10.
Generator switch - RESET, then ON.
8-31. SECOND ENGINE START (BATTERY
START).
1.
First engine generator load 50% or less.
2. Propeller - Clear.
3.
Ignition and engine start switch - ON. Pro-
peller should begin to rotate and associated
#l IGN ON or #2 IGN ON annunciator
light should illuminate. Associated #l FUEL
PRESS or # 2 FUEL PRESS annunciator
light should extinguish.
If ignition does not occur within 10 sec-
onds after moving condition lever to
LOW IDLE, initiate engine clearing pro-
cedure. If for any reason a starting
attempt is discontinued, the entire start-
ing sequence must be repeated after
allowing the engine to come to a complete
stop (5 minute minimum).
4. CONDITION lever (after N1 RPM passes
12% minimum) - LOW IDLE.
Monitor TGT to avoid a hot start. If
there is a rapid rise in TGT, be prepared
to abort the start before limits are
exceeded. During starting, the maximum
allowable TGT is 1000°C for five seconds.
If this limit is exceeded, use ABORT
START procedure and discontinue start.
Enter the peak temperature and duration
on DA Form 2408-13.
5. TGT and N1 - Monitor (TGT 1000°C maxi-
mum, N1 52% minimum).
6.
Oil pressure - Check (60 PSI minimum).
7.
Ignition and engine start switch - OFF after
50% N1.
8-11