Certainly doesn’t sound like a helicopter on it’s side in a 5,000ft descent rate
Out of curiosity, where do I go to find out what that DOES sound like? Somehow it has been absent from my life experience so far. Why would a helicopter sound different if it is descending or banking? I do agree that the sound is pretty consistent up to the last moment.
For what it's worth (thanks Google Street View) I'm pretty sure the doorbell cam is at 4304 Oak Glen St. That puts it about 400 feet off the flight path, according to the ADS-B data (
https://caltopo.com/m/P69T ). The timing is just right. If the ADS-B data is to be fully believed, they were already in a 2000+ ft/min descent and 45 degree or so bank at that point.
https://www.google.com/maps/@34.1381...7i16384!8i8192
https://www.google.com/maps/place/43...4d-118.7016795