Originally Posted by
oldbeefer
Ah, the introduction of plastic blades - I went to France on exchange in '79, and the FAF had plastic blades which I'd not flown before. I was a bit taken aback when after a fairly normal quickstop, the Nr decayed so quickly that the inverters tripped off. The response of those engines really was dire!
It was and it caught many out. I discovered the answer though. One Puma I flew in NI in 1991 had a red-line entry in the F700 for one of the engines because the Ngs were as much as 10% apart most of the time and the engineers couldn't get them any closer. The high engine never completely backed off, and it flew like a dream!