Ive noticed that whenever I fly on the 737 (IRL) right after we begin our descent and the throttles are at idle (mind you that the flight spoilers aren’t out yet) I hear this cool rumbling/buzzing sound (behind the wing) and I really kinda like it but what is it it and again this has only happened to me on 737s no other aircraft.
Might be the gear deploying…
na I said at the begining of descent, there would be an issue if it was deploying that soon.
I don’t know what that constitutes, no altitude was provided.
@Thunderbolt mean maybe 5 or so minutes after you feel that classic continuous drop. where they have set the power to idle for descent.
Fuel or Hydraulic pumps maybe?
hmm interesting maybe.
Is it perhaps your stomach? 🤔
Just kidding but if it’s got a “whooshing” sound to it my guess would be spoilers. If not that flaps and gear would be my next guess. Not entirely sure.
I flew a 737NG sim yesterday and I don’t remember anything like that, maybe the spoilers being armed
I think if it’s not the landing gear, then it’s gotta be flaps. Not entirely sure.
Could you show us a video of the sound?
It’s most likely to be the wind noise, this creates a low frequency rumbling through our the entire aircraft.
That said, if it were some sort of extra rumbling that varied in volume over a short space of time, it’s more likely to have been the flight spoilers as they create an awful lot of noise when deployed.
It may be the wind.
Could be the flaps as well. :) Flaps 1 deploys the slats .
Well It couldn’t be the flaps because it’s 5 minutes or so after the classic drop you feel when entering descent.
Maybe you could find a youtube video of a 737 descending and you could point out the sound to us?
I reckon it was the speedbrakes. They create a fair amount of noise and may have been used.
You can’t really hear it in a video, but it may just be the air passing the wings because we can hear it more while at idle.