A recent thread, with someone trying to use it as some kind of authoritative reference (sic!), made me visit again AirDisaster.com (I have not bothered with it since a looong time ago, probably 2001 or so). Well, I went straight to the page with the statistics for airplane model: http://www.airdisaster.com/statistics/ and loo and behold ... the number of flights data has not changed since then!
Yes Virginia, the data is still the one current for mid year 1999! So the A320s for instance are credited with just 6,0M flights, when at the end 2004 they were well over 21M ... What a useless joke! Well, not really, because jokes are not supposed to be harmful, while this is actually higly misleading. The fact that they claimed that "Statistics valid through December 31, 2004" does not help either.
Just for the fun of it I recalculated the actual rates using the flights data from Airsafe.com, which are supposed to be correct (*) as of end year 2004 and here is the result:
Embr. 110__3,73_____F-28_______ 3,32
Embr. 120__0,71_____727________ 0,62
A320 family 0,67_____BAe 146_____ 0,52
727_______0,66_____737 [not NG]_ 0,45
737 [not NG] 0,62____757_________0,27
757_______0,56_____Saab 340____ 0,27
Saab 340___0,33_____A320 family__0,19
Quite a difference
BTW, the very idea of giving rates of _whatever_ with 2 digit accuracy, based on an _handful of occurrences_ is a statistical joke. So strictly speaking pointing this additional absurdity out just amount to flogging a deadhorse...
I say 'supposed' because the data for same of the props is the same current for mid year 1999, anyway for the big jets look plausible.