6 min, is empty, 6 min is purely theoretical, 6 min would not clear for ground handling or a test start, or a fuel system check,6 min would not do a go around. will interesting to see if they release info about what the real amount of fuel left is, and an authorative discussion on how much useable flight time was there. did they actualy make the taxi to the terminal?, or run out on the apron?
I think the article says that someone saw 220kg written on a log - that's about 6 minutes worth at cruise. So yeah, it's zero basically.
Yes. There is another comment above making light of the 6 minutes as if another go-around was still an option, that is a ridiculous take. They were going to bring that plane in and land it no matter what on this last run, otherwise they'd crash for sure. 6 minutes may not even be within the margin of readout.
By your logic you need an infinite amount of fuel.
If you define X the amount of fuel you need after you land.
And you say that X needs to be enough to make an emergency landing.
And we define that the amount of fuel required for an emergency landing should cover the amount required for the landing operation while still having X in the tank when landed.
X > X + landing_cost
The plane already had made 3 failed attempt before and was redirected to two different airports.