It's not the CTOT's that we fudge, it's the Scheduled Departrure time we give the passengers. We give the passengers a departure time 15 minutes earlier than that agreed with the airport authority (which is driven by our airport slot). This way, when we get the fairly normal 10 to 15 delay in boarding/baggage/missing pax/late fuelling/no tow truck etc etc, the Airport figures don't capture is as they see us leaving on time.
I'm aware that Excel also try this trick, and I've heard the airports are seriously pissed off at us, so things may change. I understand the frustration of the other guys who "play by the rules", so it's probably going to be them that get most excited, but at the end of the day we have the best punctuality record....end of story really.
