I have noticed my M3 gains altitude by itself occasionally.

I think its the obstacle avoidance seeing things that arent there, and it trying to rise above them, though I don't get any beeps to say so.

The reason I think it is the obstacle avoidance is because if I have the Attitude indicator up, the two bars indicating the horizon are all over the place, and you can also visually see the aircraft constantly braking and re-accelerating.  Setting the obstacle avoidance mode to Off, from Bypass, 100% cures the problem, as does setting it to Sport mode.

I have experienced this on several days - to confirm its not a one off - and the visibility has been good.

The sensor lenses look clean, though I have wiped them with a camera lens cloth to be sure.


Any ideas?

Lots of content on this subject can be found here:  https://forum.dji.com/forum.php? ... D772%26typeid%3D772

Try turning off APAS.   Seems that is a common cause of that.

DAFlys Posted at 12-15 04:22
Try turning off APAS.   Seems that is a common cause of that.

I notice that RTH put the aircraft back into bypass mode automatically, before reverting to Off (if that was the user's desired setting) once RTH exits.

This means it climbs above 120m on RTH

Other DJI drones I've owned have done this, they either climb or descend on full stick forward.

Hawkeye Dronography Posted at 12-15 05:06
Other DJI drones I've owned have done this, they either climb or descend on full stick forward.

I've owned a few DJI's, and done over 1,000 miles in my previous Mavic 2, and never seen this in bright, clear, over land weather conditions.

Hence, I do not class this, which is repeatable on virtually every flight, as normal.

TheBoy Posted at 12-15 05:10
I've owned a few DJI's, and done over 1,000 miles in my previous Mavic 2, and never seen this in bright, clear, over land weather conditions.

Hence, I do not class this, which is repeatable on virtually every flight, as normal.

No no, mine has never did it to this extent I should note. I'm talking 0.2mph vertical with stick full forward. There is some firmware issues probably given that this isn't the first post I've seen about this. I'd say your best bet at this point is be careful and wait for an update.

Hello there TheBoy. I am sorry for the trouble this has caused and thank you for reaching out. Are you receiving any error messages on the DJI Fly application when this is happening and kindly please try flying your DJI Mavic 3 to a different location for us to be able to isolate the said issue? Thank you.

DJI Stephen Posted at 12-15 19:00
Hello there TheBoy. I am sorry for the trouble this has caused and thank you for reaching out. Are you receiving any error messages on the DJI Fly application when this is happening and kindly please try flying your DJI Mavic 3 to a different location for us to be able to isolate the said issue? Thank you.

DJI Stephen - No error messages or any other feedback from the Fly app.

The only clues its happening is the height value increases, plus if you have the attitude/radar indicator on, the virtual horizon moves up and down rapidly as if the drone is braking, then reaccelerating.

I have experienced this issue in at least 3 different locations.