very maintenance station around the world that has more than 6 mechanics and consider that there's always gotta be one nutjob in there,
Put it that way, the laws of probability almost [/]demand[/i] it!
I'm guessing that some sort of inspection of the fan would be required, assuming the individual got caught? My back-of-a-beermat maths
suggests that a 160lb man sliding along at 5-10 MPH would impact with way less force than a 2-3lb seagull at 250 knots, (ignoring the rotational velocity of the blades themselves in the case of a birstrike*).
*I'm going to go ahead and assume that no mechanic would deliberately slide down the intake of a running jet engine.