Ultrasonic warning

[Elly909]

Had a ultrasonic warning with land immediately but I had no control was using controller and otg cable and its on fcc mode

 

[tomchipps]

Ultrasonic means sound frequency above human hearing. In reguards to the Spark not sure what you are referring to.

 

[Spark 317]

Had a ultrasonic warning with land immediately but I had no control was using controller and otg cable and its on fcc mode

I found this thread on the DJI Forum.

It's a year old but something to read.
Didn't really say what to do about it though, other than don't fly in fog, for that particular example.

 

[McCloudSpark]

Can you be more specific about what was going on, what you saw, what the Spark did and what you did?
Also, what were the flying conditions?

 

[John Harvey]

Were you flying in Fog ??