Flying Corridors with Propeller PPK and AeroPoints

When flying a corridor project with the Phantom 4 RTK, Mavic 3 Enterprise, or Matrice 300 RTK, the known point (or benchmark) must be centrally located. If you have multiple AeroPoints, place them every ½ to ¾ mile (0.8 to 1.2 kilometers)If your site is set up on a local grid, the known point (benchmark) must be the first point down and the last one up. The AeroPoint can be on either side of the corridor. We recommend placing checkpoints on important surfaces.

Six AeroPoints 

Maximum distance: 4 miles (6.4km)



Six AeroPoints + Checkpoints

Maximum distance: 4 miles (6.4km)



Six AeroPoints Leapfrogging

Maximum distance: as much as can be covered in 5 hours of flight time

If you do this, you must first place a known point (benchmark) down. Pick up this AeroPoint last. It has to be on and undisturbed for the whole survey, which has a 5-hour time limit. 

The others can be turned off, moved, and turned back on to continue the survey. Your AeroPoints should be placed every ½ to ¾ mile (0.8 to 1.2km). 


Leap Frogging Mixed Fleets

When leap-frogging a mixed fleet of AeroPoint 1s and AeroPoint 2s for larger surveys, or linear projects, there is a key consideration to be aware of.


Is your goal to capture data for greater than 5 hours (due to the size of the project, and the maximum capture limit of AeroPoint 1s), or is it to accomplish the survey in less than 5 hours? 


If you are confident that the survey can be completed before the 5-hour mark, we recommend that AeroPoint 1s are used as the reference point, so that you can leapfrog the AeroPoint 2s which have a shorter minimum capture time of 10 minutes. For example:

  • Lay down your AeroPoint 1 as the reference, and turn it on.
  • Lay down your AeroPoint 2s as the AeroPoints that will need to be leapfrogged. 
  • Once the AeroPoint 2s have hit their 10-minute minimum, and you've completed your flight of that area, stop those AeroPoints from recording and move them to their new location. 

If you are not confident that the survey can be completed in under 5 hours, you should use an AeroPoint 2 as the reference point. As above, be sure that all of the leap-frogged AeroPoints are down for their respective minimum.

One AeroPoint

Maximum distance: 1 mile (1.6km)

For best results, we do not recommend only using one AeroPoint to fly a corridor project. However, if you are flying a short corridor or only have one AeroPoint, place it near the location you're flying from. It's important to note that the accuracy of your model will degrade after one mile. 

You can use additional ground control points (GCPs) and checkpoints to improve the accuracy, but the maximum distance cannot be increased. 


One AeroPoint + Ground Control Points / Checkpoints 

Maximum distance: 1 mile (1.6km)

I still can't do it! 

We wrote these articles to equip you with everything you need to get the job done on your own, but we understand that sometimes this isn't sufficient.

If you're stuck, the Propeller hardware support team may be able to help. You can contact our support team by emailing