You can even have 2 different thrust 'capable' engines fitted, but 'chipped' to produce the same thrust. The a/c systems don't know any different.
N1 Vibes, thats really interesting. So for example on a 777-367 you could have a 892 as Engine 1 and a 884B as Engine 2, and just program the engine to produce the required thrust? Go figure. Im assuming the 92,000lbf for the 773 and 84,000lbf for the 772?
Interesting that the 524HT on the 744's have been derated to 57,000 lbs of thrust, presumably to prolong engine life. Rite now the GE90 115B's are the most straight forward engine type for me to study, the rest of the fleet seems like a bit of a quagmire to remember all of the different variations.
Thanks Again