Airbus A320 - wierd noise - help!
We live approx 65 kms north of BOD, France
We see A320 family a/c of AF overhead, on way into BOD.
Nearly every time they pass over, there is a very strange noise, a change of pitch and a whining noise - as if there is a sudden drop in thrust...
I know from the description it doesnt sound strange... but evry time it happens its as though they are dropping a bomb on us...
My theory would be that we are near a beacon or marker, and that the AF Op prec would to be to begin the descent, and cut down on engine power.. would anyone have an idea?
Having lived on flightpaths before, we have heard many noises, but this, i have never heard before.