Hey, CON-PILOT I honestly hope you are talking about London (Canada) not UK. .. First ...
What's surprising with a 900EX eastbound dear Pilocol ?...I remember a Mumbaļ- Paris (France not Texas) wich was about 10h20min with the same type and more recently a KTEB-UUWW wich is around 4100nm with a EX..9H15...with everything required fuelwise and more...(Charter flight)