5-1.2 CENTRIFUGAL DROOP STOP OPERATIONAL CHECK
Electrical Power On
Hydraulic Power On
Centrifugal Droop Stop Visual Check Com-
pleted (Task 5-1.1)
General Safety Instructions:
100C0 Army Rotary Wing Aviator (2)
When rotors are turning, use care
67U20 Medium Helicopter Repairer
outside helicopter. Stay outside
rotor disk area in front of heli-
copter. Do not climb on top of
helicopter until blades stop.
Serious injury or loss of life can
occur if personnel are struck by a
1. Have pilot start engines and stabilize rotors at
Observe that weights remain in cut-in position (1).
ground idle rpm.
Balancing weights are visible during
rotation. Weights can be seen at cut-
in position (1) (stop engaged) or at
cut-out position (2) (stop disen-
2. Have pilot operate engines at flight rpm.
3. Have pilot shut down both engines.
A balancing arm and weight that
does not return to cut-in position
(stop engaged) will cause a
hazardous blade condition during
shutdown in gusty weather.
Observe that weights have moved to cutout posi-
tion (2) as rotor speed increases to flight rpm.
As blades slow down, note rotor rpm at which
balancing arms and weights return to cut-in posi-
tion. Balancing arm and weights shall reach cut-in
position at about ground idle rpm. If not refer to
Electrical Power Off
Hydraulic Power Off
No. 1 and No. 2 Engines Shut Down
Droop Stop Shrouds Installed
END OF TASK