Embraer Commercial Aviation is celebrating the ten year anniversary of the first aircraft deliveries of its E-Jets programme. On March 8, 2004, LOT Polish Airlines and US Airways each received an E-170. US Airways was the launch customer of the E-Jet in the USA. LOT was the first airline to operate a commercial E-Jet flight when the aircraft flew between Warsaw and Vienna on March 17, 2004. Embraer delivered its 1,000th E-Jet in September 2013, an E-175 to Republic Airlines. The worldwide E-Jets fleet also surpassed 10 million flight hours in 2013.