hallmark007
Captain
Flight distance : 9827923 ft
Ireland
Offline
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pashas_dad Posted at 2017-8-10 05:46
Here is a direct link to the GO4 flight record:
http://www.phantomhelp.com/LogViewer/V8W6S14SQJPWQQOJCGCA/
Perhaps someone from DJI could review this data and provide some insight! Please!
You picked up compass interference somewhere you haven't said were you took off from or why you calibrated compass when you did .
Although we might think everything is ok because we receive no warning about bad compass or ground interference it isn't always the case we always should be aware of the area we are launching from, I am not saying this was the case in your situation, but I have seen many what seem like normal launches only to experience bad compass at sometime during the flight.
Your Aircraft went into mag yaw meaning compass is pulling one way gps another direction thus causing problems for IMU basically making it impossible to control heading of Aircraft, so Spark has to drop what is causing data conflict to IMU and since Spark can't fly without compass it drops gps and goes auto into Atti mode, you managed to control it well enough not to lose your spark, your compass seemed to correct itself and gps was resumed.
From your log this looks like it happened when you turned to sport mode but I very much doubt that, at least I would have no explanation for that and I've never seen this before.
While it's a bit scary when it happens it shows the benefit of flying VLOS , and this makes it easier to control as best we can in Atti mode.
I think it would be wise to sync your flight contact a moderator here and ask them to have a look at your flight, they may also have a look at your dat file, dji have not released a program to decipher spark dat file to my knowledge yet, so they will check it out to see if there are any anomalies.
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