India's regional carrier Air Costa ordered 50 E-Jets E2 aircraft from Brazilian manufacturer Embraer, worth 2.94 billion dollars. Both the companies announced at the Singapore Airshow today that the deal with Air Costa also includes purchase rights for 50 more aircraft.Embraer said in a statement that Air Costa will become the first customer of the E-Jet E2 in the Indian market when it takes the first delivery in 2018. Air Costa executives said, they will use the jets to fly routes in secondary and tertiary markets in India.The airline started operations in October last year, serving several second-tier Indian cities.