Just supposing you inadvertently exceeded 400ft by say 28 feet for 30 seconds as you were concentrating on watching the drone rather than looking at the remote control and didn’t realise.
Would you
a) be concerned about it?
b) still upload your flight data to DJI?
c) not upload the flight data and not be concerned.
d) hide in the attic after burying the drone in the garden
It would have been a genuine mistake.
Asking for a friend, obviously.
For the record your ‘friend’ can set the max height limit of their Mini 2 in the App so they physically can’t exceed the 400ft limit if its gonna give them a panic attack everytime they go 30ft over the limit by accident
Well - yes and no - if you take off from the top of a 200ft cliff, climb to the 400ft limit, then fly out beyond the cliff, you are now 600ft agl … and illegal.
Pretty sure DJI have got better things to be doing than monitoring 100s of thousands of flight data files and would only look at them if asked to by any of the world’s aviation bodies if there was an incident and it was under investigation. Was there an incident? Did the drone interfere with a manned aircraft? If not I’d say you’ve got nothing to worry about.
Depends on how high the cliff is. Imagine a 400ft length of string hanging from your drone the end of the string needs to be in contact with the ground at all times for it to be abiding by the drone code.