Rex Kramer
Line Up and Wait
How long for the engines to spool up from flight idle to power for a go around on the 777?
I'm typed in the damn thing and to be honest I'm not sure. It's not like the old straight jets, though. It's probably only a few seconds. Hang on and I can look up some info to find the answer, or at least give you and idea.
Edit:
I can't find it off hand, but somewhere we have data that shows if you are on speed (ref to ref+5) and on a 3deg glide path, if you do a go around you will lose roughly another 27' in the process before you start heading uphill.
Of course, nothing with this Asiana says they were on speed or on a normal glidepath, so who knows how much room they really needed. The engines do spool quickly, but given that they commanded a go-around 1.5sec before impact implies it was too late.
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