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PPK module: Hardware inspection (GEN II)

Learn how to inspect the PPK antenna on GEN II units, including whether it is tightly screwed in.

At the end of each flight, the Wingtra system automatically evaluates the overall data collection performance so that users can proactively plan interventions in case issues are flagged. One of the potential issues that can come up is related to the quality of the PPK signal during the flight. WingtraPilot flags this error as shown below.



In case you encounter this error, the recommended first action would be to investigate the state of the PPK module, with particular focus on how tightly the PPK antenna is screwed in and the condition of the antenna cable. In this knowledge base article, we go through the steps of the hardware investigation. 

Step 1.  Remove the e-cover and PPK module


 
  • Power off the WingtraOne and lay it down on a flat surface, e.g., a table, with the nose pointing to you
  • Open the top cover

  • Unscrew the two torx M3x12 screws (see them circled with red in the image)
  • Unplug the USB-C connector

  • Use the screwdriver or your fingers to push the PPK cover slightly, and bend the black latch so that you can lift it out of the groove
  • Lift the cover with the PPK module and antenna attached by slightly bending the right side of the black cover

  • Lift the PPK cover and put it on the right

⚠️ Be very careful while bending and lifting up the PPK cover since it's connected via multiple cables to the electronics below.

Currently, there are two types of PPK modules—with and without a rotation mechanism placed on the bottom of the PPK antenna. Depending on your hardware version, proceed to the appropriate section.


Step 2.a  Tighten the PPK antenna without the anti-rotation mechanism


 
  • Locate the screw connecting to the antenna on the bottom side of the module

 
  • While holding the screw on the bottom, tighten the antenna as strongly as possible

⚠️ Make sure the cable protruding from the screw doesn’t move.

Step 2.b  Tighten the PPK antenna with the anti-rotation mechanism
  • Hold the PPK antenna with one hand and the PPK cover with another
  • Tighten the antenna as strongly as possible

⚠️ Do not remove the anti-rotation mechanism!

Once you are done, put everything back following the instructions backward until step 1. To determine whether the hardware investigation has had an impact. We recommend doing a test flight and checking whether the error appears again. In case the issue persists, contact support@wingtra.com, and submit the flight logs.