Ok, now it's time to ask the experts! In my FSX, many of my helicopters (both FS9 and FSX versions)produce a continuous and annoying "thump-thump-bump-bump" sound when they're on the ground or after landing. It never happens with any fixed-wing aircraft, just the choppers. I've tweaked and swapped sound files but still no joy and the problem continues. Anyone know what might be causing this and if so have a cure?
Regards and Many Thanks in advance,
Nigel