Air Traffic Noise Hotline Numbers from the City of Mountain View website:
For Moffett Federal Airfield aircraft noise, or to get more information: 650/604-2940
Wind tunnel noise (sounds like aircraft just revving it's engines), or for information: 650/604-5054
Aircraft noise may also be from flights departing from or arriving at San Francisco International Airport or San Jose International Airport.
San Francisco International Airport Noise number is 650/821-5100
San Jose International Airport Noise number is 408/452-0707
If you are not sure which airport is the origin or destination of the aircraft you are hearing, please call the San Francisco International Airport noise number. San Francisco International Airport has system capabilities that can determine the origin or destination of all air traffic.