Felix From Ireland, joined Jan 2005, 12 posts, RR: 0 Posted (15 years 4 months 1 week 2 days 5 hours ago) and read 1241 times:
allright, it might sound dumb but i've paid attention to this characteristic of the 757. When it is on approach you can hear the engines working normally, but when it passes right above you suddenly this noise changes abruptly, if you have hear it you may know what i'm talking about. After that, the sound again changes to the "normnal" one.
I want to know why specially this aircraft has this feature. Thanx!
TrnsWrld From United States of America, joined May 1999, 935 posts, RR: 0
Reply 3, posted (15 years 4 months 1 week 1 day 1 hour ago) and read 1240 times:
I live about 13 miles away from O'Hare airport and have too heard that sound when they are making their approaches into ORD. I have only heard this on A320's and 757's. Maybe this is some sort of speedbrake?
Dazed767 From United States of America, joined May 1999, 5498 posts, RR: 51
Reply 4, posted (15 years 4 months 1 week 22 hours ago) and read 1240 times:
I live about 2-3 miles from MCO. I used to hear it all the time, but not much now. I was thinking maybe they we're reducing power on the engines, but why would it happen at the same spot over my house everytime, so it probably can't be that. Are there any 757 pilots here who could tell us what it is?