@NOD - We have no brake fans on our Buses and our standard turnaround time is 30 minutes. We often operate to short-ish runways and tanker fuel quite a lot. Still, brake temp is hardly ever an issue and I have yet to see 500deg on handover...
While I agree delayed braking is a useful tool in
some situations, I think it
shouldn't be an SOP. I see a lot of people using it on daily basis, to keep the brakes as cool as possible - there's no operational benefit of doing so...
AFAIK, the tempeature band of 100-250 deg, which is targeted by these techniques, is in fact the most detrimental for brake wear...
The following video is quite informative...
https://www.youtube.com/watch?v=SG4Aw5BujEU