endotherm
 First Officer
Flight distance : 503241 ft
Australia
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OK, lots of confusing explanations and suggestions here, I'll try to address them.
If the aircraft is reporting compass calibration required, then there is a high likelihood that there is something in your vicinity upsetting the magnetic balance, probably iron or steel in the ground, reinforcement in concrete, buildings, buried pipes, keys/coins in your pocket etc. As suggested, move to another location and try again before taking off. If you take off on top of what amounts to a large magnet, all your readings will make no sense when you are up in the air and the aircraft won't know which way it is facing and cause navigation errors. It's already complaining before you start, so it will only get worse. It might not require a full calibration, just a change of location. In fact, it is recommended to get a good compass calibration and leave it unless you travel 100's of miles away or you have a hard crash etc.
With the Standard series of aircraft, you only have a GPS receiver, Adv and Pro also contain a GLONASS system, so it will report twice as many satellites. The number you have reported is normal for Standards. There is nothing wrong with your GPS.
Warranty on main components is anywhere from 6 month to 12 months, depending on what part is defective. To get warranty, you have to show that there was a malfunction and it was DJI's responsibility. Pilot errors and accidents don't qualify. If you took off and flew when it was reporting errors, it is pilot error. It is out of DJI's control, they won't take responsibility for YOUR choice to continue flying without addressing the fault.
If you crash it and the aircraft is on the ground, it does not know it has landed until you shut down the motors. Therefore it still thinks it is in flight. Being upside down is a serious flight condition, so it will do everything in its power to get the right way up, even ignoring any commands from the pilot's controller until it is up the right way again. This is why you couldn't turn it off and it was spinning at a high rate. This is normally a good thing if you hit something and tumble during flight. Unfortunately on the ground this usually results in the aircraft grinding the prop hubs into the terrain and destroying them and the blades. Sometimes even the ESC (motor controller) and motors can suffer and burn out as well. All you can do is get to it and pull the battery as fast as you can to minimize damage. So that was normal. Ripping the gimbal off and disconnecting the wires is pretty standard because this is probably the most vulnerable part and most fragile. As long as you didn't break the metal plates, you might be lucky and be able to reassemble the wiring and replace the rubber hangers.
I'll have a look at your flight log and see if I can see what might have gone wrong and caused the crash. We have a pretty good success rate on the forum if you can work out how to extract the file from your controller and share it like you did. There is also a more comprehensive flight log inside the aircraft "black box" which we can examine if necessary, but usually it isn't. If the aircraft is lost, e.g. crashed at sea, all we have left is the minor flight record from the controller, which you've uploaded here. DJI examine the internal record to determine warranty eligibility i.e. not a pilot error, and that something failed. So it's best not making up stories about what happened, because EVERYTHING is recorded and can be proven.  This DAT file is larger than the TXT file flight record, and needs software to decrypt it and view it. It is a third-party program, NOT the DJI Assistant 2 program, which works on Phantom 4 and later only.
When you crash and go inverted etc, you will get a plethora of compass errors, motor speed warnings, satellite errors etc. This is normal. It is a result of the crash, not the cause of the crash. If you see a bunch of these messages coming thick and fast, you've already crashed. If it is upside down, the GPS which is in the center of the top shell can't see the sky any more, so your aircraft will switch to ATTI mode, which means you are still in control but you lose the GPS positioning stabilization until it returns. As I said before, if it is upside down it is more serious than just flying under an obstruction like overhanging tree branches, so it ignores your input and concentrates on just one thing -- getting the right side up. In ATTI mode it is affected by wind and is likely to drift all over the place. This is also normal. You need some practice controlling the aircraft in this mode in case it ever happens to you unexpectedly.
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OK, I've examined your flight record. One of the simplest I think I've ever seen
I see nothing out of place. Some gentle climb and forward commands at low speed. Nothing to indicate pilot error and nothing to indicate a fault occurring.
Looking at the data, all I can say is that it shows there was no wind (if there were, we would see the aircraft pitch and roll angles change to counter the wind). Your last command was right stick forward, then centered. I then saw the aircraft react to that with active braking, tilting in the opposite direction to come to a standstill. The angle reported was 16° nose-up, which seems pretty severe, almost half of the maximum angle it is capable of. Perhaps you have your control settings unnecessarily set to very, very responsive, which has the downside of making changes in direction quite abrupt and violent, and could take a toll on the aircraft over time (cracks, loose components etc). If the aircraft has been flown "hard" up until now, maybe something was loose or damaged? Finally the spreadsheet shows the fall and crash without any external stimulus.
At this point we can't identify what caused it. We generally trot out a couple of likely suspects: birdstrike, or the prop wasn't attached properly and flew off (you reported all props were intact after the crash, so that is eliminated), or one of the props snapped off in flight, due to faulty manufacture (unlikely) or previously damaged by the user from a hard landing or crash. The latter may be confirmed if they check your previous flight records that have been synced (or present in the flight recorder) showing a crash/hard landing. Theoretically it is possible to examine the motor speeds and loads to determine if the prop broke in flight, but the math is pretty involved and hard for me to determine if that is the case. DJI probably have a better idea. Sometimes viewing the video can offer further clues that aren't evident in the log. It could show collision with a power line or a tree or other obstacle that doesn't show up on the (old) satellite map. If you don't have a deliberate video recording, often the lower resolution live feed can be extracted from the smart device and shared so we can take a look at it.
As you've had the aircraft less than a year and it's still under warranty, I'd definitely give the warranty claim a go as it appears you have done nothing wrong. I don't know what the outcome would be, but good luck.
Hope you followed the crash investigation steps as I've explained them and learned something in the process.
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lvl.3
lvl.4
Second Officer
lvl.2
Administrator
This DAT file is larger than the TXT file flight record, and needs software to decrypt it and view it. It is a third-party program, NOT the DJI Assistant 2 program, which works on Phantom 4 and later only.
