During the first quarter of 2015, Embraer delivered 20 jets to the commercial aviation market and 12 to the business aviation market, for a total of 32 aircraft. On March 31st, 2015, the firm order backlog totaled US$20.4bn. During the first quarter of 2015, Embraer announced a firm order for 15 E175s and two E190s from KLM Cityhopper, KLM’s regional subsidiary. The contract for the 17 E-Jets also includes an option for 17 additional E-Jets for KLM Cityhopper or Air France regional subsidiary HOP! The firm order has an estimated value of US764m based on Embraer’s current list prices. The transaction could reach US$1.5bn, if all options are exercised. Embraer and Republic Airways, operator of the largest E-Jet fleet in the world, also signed an order for five new E175 jets in 1Q15. The contract has an estimated value of US$222m, based on Embraer’s list price. The aircraft are expected to be delivered in mid- 2016. This order of five E-Jets is in addition to the previous two orders for E175s placed by Republic in January 2013, for 47 firm aircraft, and in September 2014, for 50 firm aircraft. Apart from this new order, Republic maintains 32 options for the E175s.