Pre-flight checklist

Your WingtraOne flight-prep guide according to the WingtraPilot pre-flight checklist.

The checklist differs slightly depending on the camera you are flying with. Click here for RedEdge specific pre-flight checks and here for Altum specific pre-flight checks.

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As the operator, you have to go through the pre-flight checklist within WingtraPilot before you can start the flight. Regarding the steps with the question mark icon, you can find help slides to guide you on how to use the drone. If any of the pre-flight checks fail (e.g., sensor failure), the respective pre-flight check turns red, so starting the flight is not possible. Below you will find an explanation for every checkpoint in the pre-flight checklist and troubleshooting advice if a check fails.

1. Is your ground clearance around take-off/landing at least 40 meters?

This point in the checklist is an automated test. It facilitates flight planning with safe altitudes for you. As soon as you have added a home location and added a flight area, the flight altitudes will be automatically checked to guarantee the flight path has at least the defined ground clearance related to the terrain elevation data. To modify the minimum ground clearance parameter, check the safety parameters box on the right side. The ground clearance of the take-off and landing path will be checked upon flight plan upload, for a more detailed description, check out the flight planning tools.

Note: This pre-flight check is only available if elevation data is enabled. Check WingtraPilot settings to activate the use of elevation data.

2. Hardware check. Is your distance sensor clean? Are your propellers intact and well attached? Is the camera lid removed?

Check if the distance sensor is dusty or is blocked by anything (snow, tape, etc.). The distance sensor is located at the tail of the WingtraOne, next to the middle stand. If it is not clean or if you are not sure if it is clean, take the time to clean it with a clean cloth.

Visually check that propellers are not damaged and are well attached. Try by hand to unscrew the propeller: hold the motor with one hand and the propeller with the other hand and try to open it— the red propeller has a normal right-handed thread, the green propeller has a left-handed thread. If the propeller unscrews by hand, tighten the nut with the torx or hex-wrench tool as much as you can. See the maintenance chapter for how to replace a propeller if damaged.

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Remove the camera protection lid. Put it in the pilot box right away, as it is easy to lose.

Confirm by clicking the checkpoint in the checklist. Do not fly if any part of WingtraOne is damaged.

3. Connect telemetry link to tablet and power on WingtraOne

This point in the checklist is an automated test. Connect the telemetry to the tablet to the right of the home button. WingtraPilot automatically connects to WingtraOne as soon as the telemetry is connected to the tablet and WingtraOne is powered on. If an automatic connection can not be established, you can manually connect in the Settings tab by clicking on the Telemetry button on the left side. On the bottom, click on Add. Select type Serial and baud rate 57600 and click OK. If you still cannot connect, restart and make sure that you have attached the telemetry and powered on WingtraOne.

4. Check battery voltage

This is an automated test. WingtraPilot checks whether the battery voltage is above 30V. If the voltage is below 30V, take-off is prevented and you have to switch batteries. In the following additional battery failure cases, WingtraOne will refuse take-off when trying to start the flight:

  • Battery too hot (>40°C (>104°F))
  • Battery too cold (<10°C (<50°F))
  • Batteries are not charged evenly

5. Check even take-off position

This is an automated test. WingtraPilot checks whether WingtraOne is standing on even ground. Move WingtraOne if the check is red. If WingtraOne is level and the check stays red, restart WingtraOne. The maximal slope that is accepted is 10 degrees (17.6%). 

In addition to an even take-off location, make sure that the terrain is not damp and muddy causing the middle stand or the drone to get stuck, which can cause it to tip while taking off.

6. Landing intervention setup: Ready with in-app controls

This is an automated check. WingtraOne can be controlled exclusively from the tablet with the in-app control buttons. If you've used the remote control in the past, the (recommended) option to disable it will pop up in this step of the checklist.

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Flying using the RC is not recommended. However, in case you choose to use it, switch the RC on via the on/off button in the middle of the unit. Once it's switched on, it automatically connects to WingtraOne. 

7. Check GPS signals

This is an automated test. Depending on the weather and the location, it can happen that your WingtraOne does not receive GPS lock for several minutes. If GPS lock cannot be established after more than five minutes, try to restart WingtraOne. If you still fail to get reception, submit a support request.

8. Camera readiness

This check will test the camera connectivity as well as the health of the camera mount and the ability of the SD card to store the image and flight data. The check is automatically performed immediately after plugging the flight batteries into WingtraOne. The checkpoint turns orange to indicate that the camera test process is ongoing. Once the test has successfully finished, the camera check box turns green.

If the check fails, click on the triangle with the exclamation mark to see more details about the issue and the potential solution. Once the problem is solved, click on the checklist item to repeat the check.

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Specific to RX1 cameras

For RX1 cameras, the camera settings are also checked. In case the settings are different from the default and recommended values, the button displays a Non-default settings message. If you click on the triangle you will see the settings that are changed. Even with non-default camera settings, the pre-flight check turns green, and you can perform the flight.

no default camera settings

The following settings are checked:

  • Aperture: warning triggered if the value is not 4.5
  • Light source: warning triggered if the white balance is not set to Auto
  • Camera program mode: warning triggered if the mode dial is not on 2
  • Metering mode: warning triggered if it is not set to multi-segment
  • Mode dial: warning triggered if RAW+JPEG is selected

9. PPK connection

This check will test the PPK connectivity and starts configuring the device for data collection. It also starts automatically after the flight batteries are connected to the drone. If you do not have a PPK module installed, the button will turn green and a message is displayed that the PPK module is not connected. 

If the check fails, the button will turn red and the reason for the failure will be displayed on the item. Click on the triangle with the exclamation mark to see more details about the issue and review troubleshooting instructions. Note that to repeat the PPK check you need to restart WingtraOne. 

You can always bypass a failed PPK check by clicking on the troubleshooting window and selecting that you want to proceed without PPK. This will turn the button green, but incorrect or no PPK data will be collected.

10. Calibrate airspeed sensor

Place-Pitot

 

Take the pitot cover out of the pilot box and cover the pitot tube with it. Start airspeed calibration by clicking on the checkpoint in the checklist. The automated calibration is finished when you hear the beep. Remove the pitot cover after successful calibration! If airspeed calibration fails, you can restart it by clicking onto the respective checkpoint again.

11. Review flight plan and upload to WingtraOne

After you have planned your flight, make sure you always review it by closing the checklist and checking the parameters and the planned flight path. Make sure WingtraOne will not collide with any obstacles. The altitude graph allows you to review flight altitudes properly. Note: having terrain data enabled (see Check 1) helps to set flight altitudes correctly. Be extra careful with the transition direction and altitude as well as the loiter circle altitude.

Click on this checkpoint in the pre-flight checklist to upload the flight plan to WingtraOne. WingtraPilot saves the flight plan automatically when you upload it by clicking on the checkpoint. In case you make any changes after uploading the flight plan, WingtraPilot will ask you to upload it again, which can be done by pressing the checkpoint again. If GPS position drifts more than two meters between flight plan upload and take-off, the check turns back to white and you have to upload again.

At the same time, further flight plan sanity checks are performed, and a warning is issued if they are not fulfilled:

  • Infeasible flight plan: in case your first flight plan item after take-off or your last flight plan item before landing lies lower than transition altitude, your flight plan will be rejected
    • WingtraPilot will give you the option to automatically insert a loiter waypoint at the respective location; it is recommended to insert the waypoint and manually adjust it (move it to a safe location and adjust the waypoint entry/exit altitude to a safe value)
  • WingtraOne checks whether the camera SD card storage is too low to store the calculated number of images for the uploaded flight plan. If this is the case, clear more space on the SD card to make sure all images are saved. If you ignore the warning and continue the mission upload, be aware that you might miss some images towards the end of the mission
    • Safe transition altitude checks if the minimum ground clearance for take-off and land is satisfied. In case you know that the transition altitude you set is safe you can continue as planned; we recommend to accept the suggest transition altitude by clicking Yes during this check
      • Geofence violation: both the horizontal geofence radius and the geofence altitude are checked for compatibility with the defined mission. If required, you can increase the geofence parameter in the safety box on the right

      12. Make sure the flaps are not obstructed and click to start the flap motion check.

      At this point, WingtraOne runs a routine (see video) that checks the functionality of both flaps and servos by moving the flaps back and forth. 

      Starting from version 1.13, instead of you confirming the flap motion integrity visually, the WingtraOne performs a self-diagnostic check that's designed to detect a range of different potential damage cases to the flaps and servos. 

      SuccessfulFlapcheck

      After the flaps routine is completed, the checkpoint will turn green if no issue has been detected. If an issue is detected, the check will fail (red checkpoint). You can repeat the test once more in case of failure, by pressing the flap check button in WingtraPilot. 

      DO NOT FLY if the check fails twice; instead, contact Wingtra Support.
        Applying stress to the flaps on the ground over long periods of time, e.g., a blocking obstacle on the ground, can lead to failing components. Therefore it is recommended to:
        • Make sure the flap is free from obstacles, whenever the drone is turned on
        • Prevent taking off from dense high grass or bushes if possible
        • Do not leave the drone turned  on for long periods of time if not needed

          13. Check that there are no people within five meters around the drone and that the environmental conditions and airspace are suitable to fly

          Check if the environmental conditions are suitable to fly. Also check that your flight does not violate laws. Make sure no people are close to WingtraOne. In case of wind, we advise you to be more than five meters away from WingtraOne during take-off and landing. Furthermore, be aware that GPS is less accurate in the case of surrounding tall objects (e.g., buildings, trees). This can lead to drift of WingtraOne and an inaccurate landing. Therefore, keep more distance from tall objects. Confirm by pressing this checkpoint in the checklist.

          14. Complete all previous steps and fly WingtraOne

          To start the flight, click on Start flight and move the slider left to right as shown in the images below. The ready-to-fly button will turn solid green once WingtraOne starts flying.

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          Motor pre-flight check

          Before starting the flight, there is an automatic check that spins the motors separately (see video below) to ensure that both of them function properly and that they both draw the same amount of current. In case this check fails, the take-off will be disabled. In such a case, check our list of errors for instructions on how to respond. 

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