Comparative study of metroplex airspace and procedures using machine learning to discover flight track anomalies

• Early morning flights expecting long approach but given short approach resulting in high energy profile w/ go-around (After Metroplex) - With new PBN approaches the pilots need to be alerted over ∼100NM in advance to have the OPD lined up at that point. - This requires coordination with Center on the land line. • Go-around crossing in front of another go-around on parallel approach. (Before Metroplex) - There was no LoSS, however one of the go-arounds did not follow missed approach procedure. • NW flow landing west crossing over departures. (Before and After Metroplex) - Climb via implemented in April 2014 (not part of Metroplex). - Many altitude busts on climb via. Resulted in an unplanned visual separation incident that was reported in the NY Times in July 2014. • Unexpected Runway Closure Due to Weather at HOU (After Metroplex) - There was no LoSS, however one of the vectored flights had to make a sharp turn to avoid LoSS.