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Inspection Procedure

1.Clean airframe​

Every 10 hours of flight, or after an operation in a specially dusty environment, please carry out a deep clean on the airframe. Pay special attention to:

  • Arms boom joints
  • Battery connectors
  • Service connectors on the bottom plate
  • Motors
  • GPS modules

2.Check Arm Pin loose in position.​

Check that the Arm Pin is fully threaded in position

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This is a Constantly moving part, and due to vibrations is can get loose in the thread.

3.Check arm booms screws.​

Check that the joint piece firmly grips the carbon fiber tube.

4. Check arms boom O-ring.​

Check that the O-Ring is in good condition. If it is worn it must be replaced.

5. Check Arms Boom Alignment.​

The easiest way to carry out this check is to verify that the tips of the upper propellers from two adjacent motors are perfectly aligned.

  • Tip: A drift of more than 0.5cm is a symptom of rotated arms.

  • Impact: This misalignment may induce an undesirable yaw movement during flight, which the autopilot will need to compensate for.

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This results in increased battery consumption.

6. Check propeller screws.​

Check that there are no loose screws in the connection between the propeller and the motors. The Hercules X4 uses x4 screws M3 x 10mm.

7.Check propeller blades tightening.​

Sometimes the propeller blades got loose with respect its central hub. In order to correct this, please tight the locknut.

8. Check propeller integrity​

The propeller blades are made of carbon fiber, a material that start losing its properties due to delamination of the fibers. A delamination usually starts as consequence of an impact on the leading edge of the blade. Verify that there are not signs of delamination.

9. Check motors rotation​

Check that the motors rotates without obstacles and without producing any noise. If any of these situations occurs, please contact the manufacturer.

10. Check battery connectors​

Check that the connectors are clean and free of impurities. Any impurity present inside the connectors must be removed. It is recommended to blow with compressed air.

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The Battery input pins should be shinny and clean for a robust Power connection

11. Check battery Velcro straps status.​

These straps are consumables and with use, they will lose their mooring capacity. It is necessary to guarantee a strong and tight mooring prior to each operation.

12. Check antennas status.​

Check that all the antennas are tightened, intact and the connectors in good condition.