I’m using a KLM 787-9 which has a max capacity of 19h30min of fuel. I’m flying from WSSS to TNCM which takes roughly 22h, will it be possible to stretch the fuel capacity by over 3 hours?
Passengers: 15
Cargo: 1,030kg each
Assuming I have trimmed properly and step-climbed.
I have flown over 26 hours on the 787-9, so yes it is possible. I suggest you check out this tutorial on how to increase range and improve endurance of the aircraft.
Adding onto what @Maxim said, it’s definitely possible but not simple. The 788 has the longest legs of all the 787s so I would suggest trying it with that first.