I understand that the F50s operated by Cityjet are rather older than the company might wish to boast about too loudly. How much longer can these aircraft likely carry on without having too much of an impact on flight reliability and punctuality / maintenance needs ?
Yes, I know Delta / Northwest managed to fly DC9s for decades, but old aircraft tend to be less fuel efficient and like any piece of machinery, maintenance becomes more expensive and time consuming as the machinery ages, which implies aircraft spend more time on the ground and not earning revenue in the air. Sure, this increased fuel+maintenance cost might be cheaper than interest payment for a new-but-very-expensive-to-buy aircraft, but there must be some point where replacement with something slightly less old is worthwhile.
Furthermore, what kind of capacity does Intro have to raise funds either in its own right or in Cityjet's name to replace the F50s with something that is perhaps just 10 years old instead ?