When John Wayne Airport was designed, it was an act of faith that airplanes would take off into prevailing winds over the ocean. What they failed to accept, or did not wish to admit, was that there was a city between their county airport and the ocean. So the torture of residents began.
Over the years, airport apologists focused on Upper Newport Bay, where nobody lives, as a pathway for the airplanes to the sea, but try as they might, pilots could not follow the corkscrew shape of that bay, and they smeared over houses along the way. By the time they got to Balboa Island, their tracks covered the whole of the island, but apologists wrote this off as collateral damage, and besides, the 65 dB CNEL contour was at Anniversary Lane by the airport miles away.
The clamor to stay over the bay was heard by airport management, airlines and the Federal Aviation Administration, which prepared a precision departure procedure, using new technology, to force the airplanes to fly over the exact same path down the bay to the sea.