Trying to get a grip on this statement.
Qantas pays for power by the hour, as far as cycles are concerned then the loss of revenue would be for the time for a 4 engine change, the turbine cost would have been on RR.
75 cycles, that is looking at turning the clock back to recip reliabilaty days, I find it hard to believe that Qantas or anyone else would have bought into that.
VFD
You sir have made an inappropriate slur against some great engines. I once put 75 cycles on 4 P & W R2800's in a week. And no sissy long haul cruising either it was all firebombing on 15 to 25 mile dispatches. We were either at radar power of 25 in MP trying to get slowed down. Oh and I understand that each Trent 900 cost 13.8 Million USD...that would pay for about 120 overhauls of the big piston engines, which represents 240,000 hrs of use .....