Flying with elitras into unloaded chunks makes you crash into air and fall to your death.
A posible solution would be letting your character fly thru unloaded chunks, or freazit mid air, remembering velocity until the chunk loads.
Its very frustrating because is really dificult to find your stuf if you were just exploryng flying in the midle of nowere, and elitras ar very dificult to gett.
Thank you for your report!
We're actually already tracking this issue at MCPE-55671, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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