5-40 Operation Checks for 100-Hour / Annual Maintenance and Inspection
Complete the following checklists in conjunction with 100-hour / annual maintenance and
inspection. Note and correct any discrepancies.
5-41 Ground Check (aircraft not running)
1. Replace air filter assembly per Section 71-21, if required.
2. Twist Grip:
Verify twist grip smooth rotation without binding in full up and full down
collective position. Verify over center spring holds twist grip full open or
closed.
3. Fuel Cutoff Valve:
Verify smooth actuation without binding. Verify proper function of lock
button.
4. Collective Control:
Verify proper operation through full control travel with and without friction
applied. With friction off, verify approximately one-half inch total free play
before encountering hydraulic resistance. Verify normal hydraulic resistance
throughout remainder of control travel. With friction on, verify increased
resistance but no binding or locking of control. Verify power turbine governor
rigging as follows:
a.
Turn BATTERY switch ON. With collective full down, hold beep
switch actuator all the way down. Have a second person verify
the PTG reads approximately 45°.
b.
With collective full down, hold beep switch actuator all the way
up. Have a second person verify the PTG reads approximately
65°. Return actuator to nominal position. Turn BATTERY
switch OFF.
5.
Cyclic Control:
With friction off, verify approximately one-half inch total longitudinal and one
inch total lateral free play before encountering hydraulic resistance. Verify
normal hydraulic resistance throughout remainder of control travel. With
friction on, verify increased resistance but no binding or locking of control.
6. Tail Rotor Pedals:
Verify smooth actuation without binding. Verify proper pedal position for
pilot and locking pin security.
7.
Removable Controls (if installed):
Verify proper operation and locking pin security.
Page 5.8 Chapter 5 Inspection Schedule R66 Maintenance Manual SEP 2012
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