Hi,as you can read in the topic I have a question to the sound of a 767? does someone knows if the sound of those different engine providers (PW,GE,RR) do differ inside the plane on a flight. I was just wondering if it is the same sound flying in a RR powered 763 and a GE powered one.Any responce would be helpfull!!ThanksMatthias

NO, they're very different!The P&W's sound awful (we are talking JT9D's, not the PW4000's), they are never in sync, and cause annoying vibrations and noise.The RR's and CF6's sound fairly similar, the RR is probably a 'nicer' noise, deeper and smoother, but I prefer the CF6 myself.

...and when they get out of sinc they sound like an old German U-boat...just awful.