Say you've shut down one engine on a twin to save fuel or whetever. What happens if the other one fails. Aren't you a bit up sh1t creek then, or can you restart t'other in time to save your bacon and not scare the pax so they don't report you to the press
From my systems studies engine relight depends on 2 main factors: altitude and airspeed. How long it takes would vary from engine to engine i'd say. eg: the KLM 747 that lost all four flying through volcanic ash got them going again a few thousand feet later
And the oil supply for the shutdown engine reminded me of something - i've heard that carrying a 5th engine on a ferry flight needs a little fuel to be supplied to it while it's windmilling. Can anyone confirm or explain why/why not?
Cheers, Rob.