Have just joined the forum to see if there is any useful technical information out there that can explain a recent crash I had.
I have flown over 11 hours of spark time and have been very impressed with it. However a niggling suspiscion that all is not well started to occurr a few months ago. The initial symptons showed up as an unstable altitude readout on my android phone during flightsd. The aircraft remained stable but the altitude would flick from say 20m to 7m erratically . I was not too bothered as I had good control.
recently though when flying in Vietnam on a steep hillside some 25 secs after a normal takeoff the aircraft did an uncomanded descent full up stick was immediately given which initially caused the spark to climb briefly but then descended crashing into a rock. Revcovery showed that no damage had occurre4d except a missing prop ( which was knocked off by the rock).
I have uploaded the flight data and (hopefully) a screen image is attached showing the IMU data and VPS data diverging rapidly
Any knowledgal techy’s out there got a good reason for this crash. I suspect the speed is actually a vertical speed as the spark did not fly far away. DJI service centre in Hong Kong could find no problems but I am not confident as I know I was applying a full up command during the final descent.
thanks for any ideas
ps all systems were normal ,IMU,compass, GPS etc