TM 55-1520-240-23-4
5-139
PITCH LINK CORRECTIONS FOR AUTOROTATION % RPM
5-139
INITIAL SETUP
Applicable Configurations:
All
Tools:
None
Materials:
None
Personnel Required:
Medium Helicopter Repairer
Army Rotary-Wing Aviator (2)
References:
TM 55-1520-240-10
Task 5-94
Equipment Conditions:
Helicopter In Level Flight (TM 55-1520-240-10)
1.
Have pilot perform autorotation. Have him read
ROTOR % RPM while passing through selected
density altitudes (TM 55-1520-240-10).
2.
Record density altitude and % RPM on
Autorotational RPM Chart (1).
NOTE
% RPM on left side of acceptable
range is low. % RPM on right side
is high.
3.
Have pilot land helicopter and stop engines (TM
55-1520-240-10).
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