I always see 757s, A320s and 767s being retired in the desert probably due to their age and cycles. I can only imagine that CRJ's and ERJ's accumulate more cycles in a shorter amount of time due to their quick hops. Does anyone have a clear answer as to how many cycles a typical RJ is good for? Some of these aircraft are getting pretty hairy (I think I have seen grass growing in one of these things) and it's pretty surprising to me that we haven't had anything suffer some type of structural fatique. I know they are smaller aircraft in which can endure a higher PSID than the bigger cabins but there has to be a predetermined cycle number that the engineers have come up with.