The whining noise mentioned on the 146- can this be heard from the ground when a 146 flies overhead i wonder? I have on many occasions heard a loud whining noise whenever watching a 146 fly overhead(i live near a flightpath), but this noise is only heard when the a/c is 2-3 miles away from me but is nonetheless quite noticeable and distinct to this type of a/c. Is this due to the flaps or perhaps just the engines spooling up/down???