I Don't wanna sound sarcastic but
Well the thread title said 777
That it does and I started the thread, the company I work for flys the 777-200, 777-300, 777-200ER, 777-200LR, 777-300ER, 777-300ULR, 777-F with both the Rolls and the GE engines,
so as I said
depending on what aircraft you are flying
Using a derate increases the weight?? As I said we just use ATM so I am familiar with that not derating, but seems counter intuitive that derate increases the weight, unless its something to do with VMCG/A ??
The engine out on 30R DXB is DXB 3.4 left 292 (off the top of my head since I don't have reference handy) so in an old 300 with the Rolls when its 40C+ and heavy you are pushing the 400ft for the turn.