Originally Posted by
stilton
Very interesting AF, thanks for the informative reply, what about reliability though.
People rave about how reliable the PT6 is, how does the Garrett engine compare ?
Well, for one, it has 1800hr longer TBO, so that's a pretty good vote of confidence. In fact, if you're on a certain maintenance program, your engines can have 7000hr TBO. Now, in reality, I don't think the PT6 is any less reliable with it's 3600hr TBO, it's just that P&W have an interest in keeping the TBO there. It's what the market can bare. They're not interested in extending the TBO as long as not too many complain. And today, when they have virtual monopoly, it's very unlikely they will. I think both engines are equally as safe and reliable, but I do welcome the new GE H80 series in the Denali and some TPE developments also. P&W could certainly use the competition.