eddie1 -
But if you had 1 engine shutdown within 6500hours, how does this go together with the message of Eurocopter "below 1 fail in 100.000hours" for JAA CAT A procedure certification purposes in Europe?
That's one that had to be shut down in 6500hrs flying - so it's actually 13,000 engine hours. There will be plenty of engines that have flown the full 3500 TBO without problem, and so the average that will make up the certification figures.
As to your other question,
If you have one engine freeze at 20% Torque can I pull the 128% with the other engine? Will the FADEC of the good engine approve the 128% . . . ?
the answer in my boook is No you shouldn't but Yes you can and FADEC will give you as much as you want. Basically, if you have one engine providing power, taking the other into the OEI zone is
possible (the only Tq limiting factor is your left hand) but, if you do it, the engineers will be talking to ECD & doing over-torque checks on the transmission. Following the Flight Manual "If flight situation requires max engine power, Tq setting of affected engine may be increased" or similar, should be observed.
