Now others need to do the same.
A light aircraft (Cessna type), travelling over a house, can be heard for a minute or two, depending on wind, before it arrives, maximum noise for 20 seconds and then another minute or two afterwards.
Which is why people think there are far more aircraft in the sky than there are.
I remember a huge local council row over Bournemouth in England over a request for more training flights in the early 1990s…
Residents filled out noise disturbance forms and flyers filled out logs of where and when they went.
The residents put 10 times more aircraft in the sky than existed, all in good faith as they heard them at different times.
Aircraft noise is much more intrusive than road traffic noise.
And the changes: better silencers, sound absorbing foam in engine compartment and quieter propellers are hardly revolutionary.
The first two became obligatory for cars in most parts of the world 30 years ago.