There's a mathematical formula used to predict your chances of crashing in the rotor wing environment. IIRC, after your 90th flight, you're due. Here's a good site to look at medical aviation mishaps..
http://www.concern-network.org/
Click on the archives for a year to year description. We've had doors fall off in flight, a cabin fire (patient loaded) on final to the roof top, etc, etc.
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George
Massachusetts
1970 GTO (someday

)
1968 Olds 442 convertible 4 speed
1969 Buick GS Stage 1 convertible- concours gold