Nail the Dream, interesting comment. Where does your stats come from? My maths are poor so can you just confirm how you are quoting this, as it is ambiguous. Are you saying 7 ac are u/s whilst the 902 isn't? or that 25% of the time, 1 of 7 EC135s are u/s? Or does unavailable mean in for servicing?
In other words 1 day in every 4, 1 in 7 ac is not available. Which means each ac is down for 1 day in 28. Seeing as we fly 100 hours a month, ie 2x50hr services at 1/2 day each. I make that we NEVER go u/s.
If servicing is not included, that still means approx one day a month, which is 96% servicable. I'll take that thanks!! If my maths are wrong, please accept my apology for being a w@nker!!