were studying the Airjet 70 based on the ATR 42/72 fuselage for a range, AI(R) and Embraer were studying a joint development of a 70-seater jet since their separate projects were not yet launched. In February 1999, Embraer announced it had abandoned the derivative approach in favour of an all-new design. On 14 June 1999, the E-Jet family was formally launched at the Paris Air Show, initially using the twin designations ERJ-170 and ERJ-190; these were subsequently changed to Embraer 170 and Embraer 190 respectively. The launch customers for the airliner were the French airline Régional, which placed ten orders and five options for the E170, and the Swiss airline Crossair, which had ordered 30 E170s and 30 E190s. During July 2000, production of components for the construction of both the prototype and test airframes began. Difficulties with the advanced avionics selected for the aircraft, supplied by the American company Honeywell, led to delays in the development schedule; originally, the first flight had been set to take place during 2000. On 29 October 2001, the first prototype PP-XJE was rolled out at São José dos Campos, Brazil. Intro flight On 19 February 2002, the first prototype performed its maiden flight, marking the beginning of a multi-year flight test campaign involving a total of six prototypes. In May 2002, the aircraft was displayed to the public at the Regional Airline Association convention. During that same year, full-rate production of the E-Jet commenced; this activity was centred around a recently-completed factory built by Embraer at its São José dos Campos base. After a positive response from the airline community, Embraer launched the E175, which stretched the fuselage of the E170 by . During June 2003, the first flight of the E175 took place. In April 2003, jetBlue placed an order for 100 Embraer 190s, the deliveries of which commenced two years later. Following several delays in the certification process, the E170 received type certification from the civil aviation authorities of Brazil, Europe and the United States in February 2004. Production In 2008, the 400th E-jet was delivered to Republic Airways in the United States. In September 2009, the 600th E-jet was delivered to LOT Polish Airlines. On 10 October 2012, Embraer delivered the 900th E-Jet to Kenya Airways, its 12th E-Jet. On 13 September 2013, the delivery of the 1,000th E-Jet, an E175 to Republic Airways for American Eagle, was marked by