I accept that the challenge of "Jet Age #7" is to move from piston to jet aircraft.
My airline has fewer that 70 aircraft. I finally finished replacing all of my Martin 240s with newer F-27s. This was relatively easy becausese both types have a similar range and turn around time. Now, however, I am replacing my DC-6Bs with 727-100s. This is a more complicated process because the 727 is a much faster aircraft. Since it is faster, it requires that I pay for new slots when substituting it for the slower DC-6B. Plus, since it is faster, I have to find an additional route by either adding more slots to another airport for a new route, or by replacing a flight now flown by a F27. This opens up a new slot for the F27, etc.
This is an expensive and complicated
process, which looks like will bankrupt me! But that is not my point!
My questions is: How do airlines with hundreds of aircraft manage this process?
I am amazed!