Hello Spark_South_Oz,
its Camera sensor error related. Hopefully i can fix my dji spark I miss my drone to fly again.
As per the links, somehow it has been related to microSD in past same code situations, worth reading some of those search results.
Some are Phantom related, but the codes should be same for all DJI aircraft.
From the DJI forum link above . . .
"suddenly during mid flight only a couple hundred feet away the video signal disappears! The status at the top of the screen reads No Image Transmission Signal. Then I get the error message Air Encoder Error (0x800020). "
"Having the same issue. "
Air Encoder Error" and "
No Image Transmission Signal". The Gimbal status is also in a state of "
Gimbal Disconnected".
SIDE NOTE: This happened after I swapped my MicroSD card for a larger capacity card. Coincidence? Perhaps. Still not happy!
A bit frustrating and discouraging that this happened only two weeks after purchase. I'm sending back for a full refund and I will purchase another one at a later time. I would love to know what happened but I may just let it go. It was the first drone that I've owned, but I have prior experience. Hope to see some results from this soon!"
"Ive just had the same problem and error code 0x800020 when trying to update firmware. No matter what I did it wouldn't clear. No camera view ... nothing. Then I took out the SD card, put it back in and the code seems to have cleared and update done. "
Some on these forum threads had no luck, and had to send to DJI.