This site is being deprecated.
Please see the official X‑Plane Support page for help.
I still get this. It stopped on beta and I just, pedestal to beta 11 it is back. I killed the sound files for the aircraft and did an update to replace them and it made no difference. It only happens on this aircraft. And it's the engine sound. It'buzzes ' every 10 seconds or so. I have a recording attached if anyone is interested.
This site is no longer being actively maintained.