Hi all,
Hope I am not breaking any forum rules, but I can't seem to find previous reports of this issue so I created a new thread here (or at least tried to :).
Since this most recent update (1.5.3.52018 on a Win10 64-bit machine), I get an intermittent bug where the wind and/or engine-noise is gone upon re-starting a mission airborne. Only when I re-start (pressing L-Shift+R in game), never upon freshly starting from the main menu. I only hear the fluttering sound that you get when AoA is high, but no baseline wind and/or engine-noise ... and then suddenly the sound will re-appear without a noticeable trigger, it just re-appears.
I also tested the F15-C and it does not seem to have this bug.