Three parallell runways operations in USA.
Heathrow is planning to use a parallell three runway system, if the UK government gives permission to build a third runway. They appear to be unwilling to explain how this will operate and give respite to local residents. Currently respite splits at 3pm each day with a switch of runways, but with 3 runways respite will be split by one third, across 6am to 11pm ops. Also each runway will need to accommodate A380 ops departing to the North and South from all runways & possibly only one flight westwards to the US. Are any US airports operating in this mode?