Survey height

I planned and flew a survey pattern yesterday but noticed something odd, the survey height was set to 40m. During the survey the drone maintained a steady 15m??

Can anyone advise why this could be?

Thanks in advance.


40 feet = 12.19 meters
Could it be some metric vs imperial unit issue?

Good point Yuri, I will check but pretty certain Qground control survey was set to 40m.

Strange, I loaded and flew the same mission. This time it flew the survey at 40m as programmed.

I read an old thread describing this issue… mixing of feet and meters. Is your fw updated? Try to reproduce… The thread was about Ardupilot not PX4…