How long can you fly the A333 and A339?

I encourage you to fly the B77L (777-200LR version) because it has the body of the 777-200 but motorised and equipped with the wings of the B777-300.
With a small market charge you can beat the 24h non-stop flight easily (after a 22h flight at my cruise level I had fuel for another 9h)

For some reason, I have issues flying westbound, especially long haul. Four hours of extra fuel (in either direction) is just enough for me, especially when heading west.

Maybe you are flying to high or maybe you should start at a lower altitude and later climb to a higher altitude.

That might be it - the A330 is tough to perfect.

For a better range you can try to keep your N1 around 91%.

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