The Embraer ERJ 145 family is a series of twin-engine regional jets produced by Embraer, a Brazilian aerospace company. Family members include the ERJ 135 (37 passengers), ERJ 140 (44 passengers), and ERJ 145 (50 passengers), as well as the Legacy business jet and the R-99 family of military aircraft. The ERJ 145 is the largest of the group. Each jet in the series is powered by two turbofan engines. The family’s primary competition comes from the Bombardier CRJ regional jets.
The first flight of the ERJ 145 occurred on August 11, 1995, with the first delivery in December 1996 to ExpressJet Airlines (then the regional division of Continental Airlines flying as Continental Express). ExpressJet is the largest operator of the ERJ 145, with 270 of the nearly-1,000 ERJ 145s in service. The second largest operator is Envoy Air, with 206 ERJ 145 aircraft. Trans States operates 47 ERJ 145s through alliances with United Express and Envoy Air. Chautauqua Airlines also operates 38 ERJ 145s through an alliance with Delta Connection. By some accounts, the ERJ 145 has a cost of ownership of about $2,500,000 per year.