Nick,
76C. Both TQ's fluctuate constantly and rapidly 5% at 107% Nr with no corresponding fuel flow, N1 or T5 movement. At minimum beep TQ fluctuates slowly through 25% once again with no movement in other parameters. Any ideas? Factory guys are in the shop investigating at the moment. Over the years this is the forth occasion and been solved in the past by changing main gearbox.
Thanks in advance - Brian