Originally Posted by
meleagertoo
I'm sure P & W's lawyers will agree with the OP in that "transient" excursions are regarded as unplanned momentary operational exceedences and should never be used wilfully or deliberately, let alone routinely. I'd be astonished if that were not so.A "transient" exceedence occurs in an unexpected event when the "Oh Christ oh !!!! oh dear" situation results in an input that produces a "woops!" response which is almost immediately cancelled/reduced. Seems pretty self-evident to me. And furthermore I'd hate to try arguing a defence of that practice against an FAA lawyer.
Many years ago we had a free with a torque guage failure fly the 1900 at something like 150% for a day prob 3 legs. The next crew immediately noticed and returned to gate, dumped the pax, and sent for MX..... It turns out they had been driving about 5 hours that way. They were company "problem children". They couldn't understand the higher speeds, fuelflow, temps or use of rudder. They pulled the engine e and sent to overhaul, it came back with fresh overhaul but no new parts.....They built the PT6 tough!