5-40 Operation Checks for 100-Hour / Annual Inspection
Complete the following checklists in conjunction with 100-hour / annual inspection. Note
and correct any discrepancies.
5-41 Ground Check (aircraft not running)
1. 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.
2. Fuel Cutoff Valve:
Verify smooth actuation without binding. Verify proper function of lock button.
3. 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.
4.
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.
5. Tail Rotor Pedals:
Verify smooth actuation without binding. Verify proper pedal position for
pilot and locking pin security.
6.
Removable Controls (if installed):
Verify proper operation and locking pin security.
Page 5.8 Chapter 5 Inspections JUL 2020
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