Boeing is warning that escalating trade tensions between the US and China—the US manufacturer’s largest single market—may soon threaten prospective aircraft sales, particularly the company’s lucrative twinjet 777 and 787 families.

Boeing CEO Dennis Muilenburg remains confident regulators will clear the 737 MAX to fly again this year, but suggested the volume of requests and growing variance between regulators is making that target more difficult to meet.

Airbus and Boeing commercial aircraft deliveries for 2019 year-to-date, sorted by most-recent delivery date.

Airbus and Boeing commercial aircraft gross orders for 2019 year-to-date, sorted by most-recent date of order placement with manufacturer.

A combination of increased capacity at Istanbul’s Sabiha Gökçen Airport and the arrival of larger aircraft in the fleet will bring brighter prospects for Turkish LCC Pegasus Airlines, CEO Mehmet Nane said.