A300 American From United States of America, joined Jan 2000, 173 posts, RR: 1 Posted (12 years 5 months 2 weeks 2 days ago) and read 1055 times:
I usually fly to and from South America (LIM) on American Airlines A300s. I always noticed that when the plane begins to move to the ramp (or just move), the engines make a spooling up sound (normal) and then make a sound as if they are spooling down (spooling up sound with a high pitch engine sound followed by a low pitched-hollow engine sound......But the thing is, the plane continues to move forward...even gain momentum!!). I sometimes fly on LAN Chiles 767s and noticed their engines don´t make that interesting sound. Hmmm.....Any thoughts anyone? I believe that American uses GE engines.
CO DC-10 From , joined Dec 1969, posts, RR:
Reply 1, posted (12 years 5 months 2 weeks 2 days ago) and read 1024 times:
The A300 and the 767 are completely different aircraft with different characterisitcs. Airbus has been noted in the past as having weird engine noises especially on their A319/320/321 narrowbodies where the engine sound is described as a "yelping dog being blended."
Dazed767 From United States of America, joined May 1999, 5486 posts, RR: 51
Reply 6, posted (12 years 5 months 2 weeks 1 day 10 hours ago) and read 928 times:
The dog noise might be the hydraulic pumps (hear it all the time, and pax always get worried). As for the A300, I just flew on one last week (had been 12 years since my last ride), and the sound on take off was really something. High pitched whine, then deep....I love it!