gas path,
Wasn't just the 211... if I remember rightly, the RB162 turbojet (Trident 3B booster engine) had composite stator & some rotor stages - it was called the 'Plastic Fantastic' with a fair degree of irony!
I recall being told there was a tendency for the plastic blades to stretch, eventually meeting the stator with dire results a short time beyond its rated life. Overhaul procedure for the compressor was alleged to be 'scrap it'!
R1