TM 55-1510-221-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
*13. Rudder boost Check as follows
a.
Rudder boost switch ON.
b.
Left engine power lever IDLE
c.
Condition levers LOW IDLE.
d.
Right engine power lever Advance until
rudder boost moves right rudder In The
rudder boost system should activate
within the values of Ni and free air
temperature specified in figure 1
e.
Rudder boost switch OFF System
should deactivate, releasing rudder
pressure
f.
Repeat above procedure for opposite
engine
*14. Autofeather system Check as follows
F4-15
a.
Condition levers LOW IDLE
b.
Autofeather switch Hold to TEST (ARM
lights should remain extinguished).
c.
Power levers Advance to approximately
22% torque, then move Autofeather
switch to test mode Both ARM lights
should illuminate
d.
Left power lever Retard
(1)
At 16 to 21% torque, check right
AUTOFEATHER light extinguished
(2)
At 7 to 12% torque, check left
AUTOFEATHER light
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