[Zephyr]

By chance, absolutely fortunately, some time ago I was working on the similar problem and I have fix it. This is a bug in original Il-2: when entering a gunner cockpit a sound of the wind is started, but it is not stopped when leaving - so it needs adding a few lines in CockpitGunner class, which turn off that sound.

Alors, voila:
please check this topic
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