Hi all,
havenīt flown any helicopter, that was waterproof anyway. After some time it starts to rain into them. Either from the top or through the doorseals.
The 206 doesnīt have a wiper - and as long as you keep the speed up and the windshield polished with nanofluid - no problem anyway.
On the others - wipers seem to make the problems worse - just open the sliding window on the side, accept some water through the window - it will leak out through the doorseals anyway and do some sideslipping i.e. for landing and so on.
Best is flying at night with NVG. You just donīt see the rain, the drops donīt fit to the wavelength of the amplified light. Only the visible range is decreasing and giving you a hint - or reflections from the strobelight.
If you switch on the landinglight - you will see the rain - but better keep it switched off - its blinding then.
Greetings Flying Bull