New Mini 5 Pro owner with concerns

[heimao88]

Hi everyone,
I’m looking for advice because I experienced a very scary issue today with my new DJI Mini 5 Pro. I bought it just this week and today was my first real flight with it.

I was flying in a park with a small lagoon and, out of nowhere, the drone suddenly lost all satellites. It immediately switched into Attitude (ATTI) mode, turned red in the status bar, and began drifting very quickly and uncontrollably. I had to fight the sticks just to keep it in the air and prevent it from flying away.

After about a minute, it finally regained satellites and stabilized, and I landed it right away.

This has never happened to me with my previous drones , Mini 3 Pro (Except for when it suddenly fell out of the sky), Spark, and Flip, even in areas with more people and more interference. In this case there were very few people around, and the location didn’t seem to have any obvious interference sources.

This sudden loss of GNSS on a brand-new drone is really concerning, so I’m hoping someone can help analyze what might have caused it. I’ve already extracted the flight logs and will upload them here.

Any advice, insights, or similar experiences would be greatly appreciated.
Thanks in advance!

Flight Record:

DJI Flight Log Viewer - PhantomHelp.com

 

[Lykus]

Welcome to the forum!

 

[MA2 317]

Hello from the Crossroads of America heimao88.

Nice to meet you.

Help may be along soon and you already posted the flight log so that's a start.

Welcome to the Forum.

.

 

[UAVquadman]

Hi everyone,
I’m looking for advice because I experienced a very scary issue today with my new DJI Mini 5 Pro. I bought it just this week and today was my first real flight with it.

I was flying in a park with a small lagoon and, out of nowhere, the drone suddenly lost all satellites. It immediately switched into Attitude (ATTI) mode, turned red in the status bar, and began drifting very quickly and uncontrollably. I had to fight the sticks just to keep it in the air and prevent it from flying away.

After about a minute, it finally regained satellites and stabilized, and I landed it right away.

This has never happened to me with my previous drones , Mini 3 Pro (Except for when it suddenly fell out of the sky), Spark, and Flip, even in areas with more people and more interference. In this case there were very few people around, and the location didn’t seem to have any obvious interference sources.

This sudden loss of GNSS on a brand-new drone is really concerning, so I’m hoping someone can help analyze what might have caused it. I’ve already extracted the flight logs and will upload them here.

Any advice, insights, or similar experiences would be greatly appreciated.
Thanks in advance!

Flight Record:

DJI Flight Log Viewer - PhantomHelp.com

see if this happens again. And they don't fly away by losing GNSS unless there are other issues.

 

[DoomMeister]

see if this happens again. And they don't fly away by losing GNSS unless there are other issues.

They don’t fly away, but they do drift with the wind. There is no dynamic braking when the sticks are released and return to center. The laws of inertia govern the flight. The only flight assistance is from the barometer helping to maintain altitude.

If it has been awhile since the drone has been used it can take up to 12 minutes to fully update the almanac for GPS.

Quote from OP: “I had to fight the sticks just to keep it in the air and prevent it from flying away.”

If you experience Atti mode in the future yaw the aircraft to face into the prevailing wind and then use right stick forward to counteract the wind and prevent drifting. Remember that with GPS not working any control inputs will require a bit of the opposite control to stop movement in that direction. Releasing the stick does not stop the inertia as when GPS is stabilizing the aircraft.