Hello.
1.5 brings stall buffet sounds. I had to turn them off (rename to .off) because of the fact that they do not disappear after recovery from stall. They continue to play even after landing, reloading plane or selecting default plane.
This will be fixed in the next update. You can install the fix manually using these files - https://justflight.sharefile.com/d-s0b0f928784a1466cbc39fa1e0a23951f