Boeing is still leaning toward building a new version of its narrow-body 737, but other questions remain such as what materials would be used, its size, and where the plane would be built, a Boeing executive said on Thursday.
"There's a long laundry list of things we have to understand in potential trades we can make," Mike Bair, Boeing's head of single-aisle development programmes said.
"We're not interested in what the market needs today. We have to understand what the market needs in 2030," he said.