yes ryanair a/c taxi at very high speeds far in excess of what they are supposed i see it reguarly from the twr we don't mind ,yes they fly fast app's and sometimes it helps i have never seen a fr pilot go around for that reason ,and yes i have heard of a/c who taxi with one engine off have seen on some aerodrome plates the ref:747 a/c taxi only with engines 2+3 running due jet blast.surely with the apu on its providing hydraulic and electrical power i.e. brakes to stop before the end of the stand.and yes i have seen fr pilots use reverse on taxiways it's kicked up a lot of dust from w.i.p. and we have commented.
