I used to fly around in a Bell 47J with a carburettor and a float valve which in turbulence used to cause the engine to splutter and fart worse than the old crone down the road coming home from the pub... and to make that even worse we did it at night over the ocean landing on ships and oil platforms and I need several scotches just thinking about it which considering I don't drink is saying something... anyway, so my scariest helicopter ever is the Bell 47J... so what's yours... anyway this is all on my blog about helicopters in Kiwi Land and can be found on the following link;
Top Birds & Everyfing
Good luck!
Chris