10 or 15 minutes if i remember rightly what i've read...
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up." "Why not?" said Gurder. "Dunno. It's frightened of heights, I guess."
I have 1 stupid ask : How to fly "old style navigation" from VOR to VOR by radials with A3xx ? I know how enter VOR frequency and radial to FMC by MCDU, but how can I automatic intercept selected radial ?