wake separation with crosswind
Hi all
I'm trying to find guidelines on the reduction of separation required, due to a crosswind, between departing heavy and medium cat aircraft for take off. As far as I'm concerned 2 minutes is required, but last night out of Johannesburg we were asked if we were ready for an immediate take off less than a minute after a heavy departed. I said no and queried the ATC's separation - he said less was needed with the crosswind there was. (Rwy 03L, wind 360/13, crosswind component = 7kts.)
Many thanks.