Embraer is on course to finalise the configuration of its proposed E-Jet refresh by year-end when it expects to confirm the changes it will incorporate into the re-engined twinjet.
Discussions are underway with all three of the major engine manufacturers about potential powerplants.
Speaking at the Singapore air show, Embraer commercial aviation president Paulo Cesar de Souza e Silva said that the details of the refresh are still being "analysed" and that it will "not be only about the re-engining but it will be a little bit more than that".
He added: "We are taking a lot of time to talk to our clients, to understand their needs. We should finalise this very, very soon and take a decision by the end of the year."
Silva said that talks are being held with the existing E-Jet engine vendor General Electric about the re-engining, as well as with Pratt & Whitney and Rolls-Royce. "We're talking to all three," he said.
Embraer is now evaluating the potential changes needed to undertake the re-engining. "We're looking at how much we have to change, if we have to change. Whether or not we have to change the wings," said Silva. "Whatever we have in the future re-engined E-Jets, they will have commonality with the current family."