HYDERABAD: Maintaining the operational expense for regional jets becomes a bigger challenge, a senior Boeing executive said on Wednesday as he emphasised that the Indian market requires single aisle aircraft economics. 

The executive was referring to the cost efficiency of operating single aisle or narrow body planes in the country. 

With increased focus on air connectivity, especially to Tier 2 and 3 cities, regional jets is slowly gaining prominence and on Tuesday, Adani Group and Embraer announced plans to set up a facility for such jets.