Trans States Airlines (AX, St. Louis Lambert Int'l) is to take delivery of six former Passaredo Linhas Aéreas (2Z, Ribeirão Preto) E145s, the first two of which N834HK (c/n 145269) and N829HK (c/n 145281) are already in service as United Express operating feeder flights on behalf U.S. mainline carrier United Airlines (UA, Chicago O'Hare). Trans States has recently stopped its flights that it had operated for competitor US Airways (US, Phoenix Sky Harbor) as US Airways Express with the three ERJ-145 jets it had still operated for US having been either repainted into United's livery or stored. It now exclusively operates for United.