https://web.mit.edu/...wbody Fleet.htm
https://web.mit.edu/...ating Fleet.htm
According to this source, 9.1 is not very high...
Frontier even averaged more than 20hrs in 2002, which is beyond AE's limit!
and remember, this is WITH technical problems, groundings, cancellations and A,D checks factored in, which, again, AE does not have
to be fair, I didn't know the figures, I just knew that it was a strategy some LCCs used and assumed Ryanair was included