I don't think you can because it might be bugged, but you can try this method, make a backup first so you won't be in trouble. How would I use the RR Trent 895 Engines on the 777-200ER, instead of the GE90's? Hi! This is awesome! But I just have a question. !!MUST READ ALL THE INSTRUCTIONS TO AVOID ANY PROBLEMS!! This one has FMOD sounds so you can just delete the FMOD if you want to and replace it with BSS. This also includes AlphaPapa's Ultimate Mod.
