Its strange why the B757 is considered heavy for arrival spacing, but for departure purposes it can be considered a normal medium and the following aircraft cleared for takeoff 1 min behind. Why is this?
However, what was even more strange was doing departures on saturday when I get a call from a KLM 737 who said he was happy to accept 1 minute departure separation behind a B777!!! I wasn't happy so he got the full two mins!!
FB