TM 1-1510-225-10
9-4
3. AUTOFEATHER switch – OFF.
4. GEN switch – OFF.
9-10. ENGINE RESTART DURING FLIGHT (USING
STARTER).
Engine restarts may be attempted at all altitudes.
If a restart is attempted, perform the following:
CAUTION
The pilot should determine the reason for
engine failure before attempting an engine
restart during flight. Do not attempt an
engine restart if N1 indicates zero.
1. CABIN TEMP MODE switch – OFF.
2. Electrical load – Reduce to minimum.
3. Fuel FIREWALL SHUTOFF VALVE –
OPEN.
4. POWER lever – IDLE.
5. PROP lever – FEATHER.
6. CONDITION lever – FUEL CUTOFF.
7. ITT (operating engine) – 700 ºC or less.
8. Engine – Start.
a. IGNITION AND ENGINE START
switch – ON.
b. CONDITION lever – LOW IDLE.
NOTE
If a rise in ITT does not occur within
10 seconds after moving the CONDITION
lever to LOW IDLE, abort the start.
c. ITT – 1000 °C, 5 seconds maximum.
NOTE
If N1 is below 12%, starting temperatures
tend to be higher than normal. To preclude
overtemperature (1000 °C or above) during
engine
acceleration
to
idle
speed,
periodically move the CONDITION lever
into FUEL CUTOFF position as necessary.
d. Oil pressure – Check.
e. IGNITION AND ENGINE START
switch – OFF at 50% N1.
9. GEN switch – RESET, then ON.
10. Engine cleanup – Perform if engine restart
is unsuccessful.
11. CABIN TEMP MODE switch – As
required.
12. Electrical equipment – As required.
13. ENG AUTO IGNITION switch – ARM.
14. PROP SYN switch – As required.
15. POWER – As required.
9-11. ENGINE RESTART DURING FLIGHT (NOT
USING STARTER).
A restart without starter assist may be
accomplished provided airspeed is at or above 140
KIAS, altitude is below 20,000 feet, and the propeller is
not feathered. If altitude permits, diving the aircraft will
increase N1 and assist in restart.
1. CABIN TEMP MODE switch – OFF.
2. Electrical load – Reduce to minimum.
3. GEN switch (affected engine) – OFF.
4. Fuel FIREWALL SHUTOFF VALVE –
OPEN.
5. POWER lever – IDLE.
6. PROP lever – HIGH RPM.
7. CONDITION lever – FUEL CUTOFF.
8. Airspeed – 140 KIAS minimum.
9. Altitude – Below 20,000 feet.
10. ENG AUTO IGNITION Switch – ARM.
11. CONDITION lever – LOW IDLE.
NOTE
If a rise in ITT does not occur within
10 seconds after moving the CONDITION
lever to LOW IDLE, abort the start.
12. ITT – 1000 ºC, 5 seconds maximum.
