TM 55-1510-221-CL
AUTOFEATHER
1.
Condition levers - LOW IDLE.
2.
Autofeather switch - Hold to TEST. (#1 AUTOFEATHER and #2 AUTOFEATHER advisory annunciator lights
should remain extinguished.)
3.
Power levers - Advance to approximately 22% torque, then move autofeather switch to TEST. Both #1
AUTOFEATHER and #2 AUTOFEATHER advisory annunciator lights should illuminate.
4.
Left power lever - Retard.
a.
At approximately 16 to 21% torque, check #2 AUTOFEATHER advisory annunciator extinguished.
b. At approximately 9 to 14% torque, check #1 AUTOFEATHER advisory annunciator light
extinguished. (Left propeller starts to feather.)
5.
Left power lever - Set approximately 22% torque.
6.
Repeat steps 1 through 4 for right engine.
OVERSPEED GOVERNORS
1.
Power levers - Set approximately 1950 RPM (both engines).
2.
#1 propeller governor test switch - Hold to TEST position.
3.
#1 propeller RPM 1830 to 1910 - Check.
4.
Repeat steps 2 and 3 for #2 engine.
5.
Power levers - Set 1800 RPM.
C2 P-8
