Boeing Co expects the 737 MAX 7 will be certified by the end of the year and the larger MAX 10 in the first half of 2023, a company executive said.

The planemaker faces a year-end deadline from U.S. lawmakers for both or will need to meet new cockpit alerting requirements unless waived.

“The MAX 7, that’d be the first one to come in. The MAX 10 will be right behind that,” John Dyson, product marketing specialist at Boeing Commercial Airplanes, told reporters before providing more specific dates to Reuters after a briefing.

Major customer Ryanair Holdings PLC on Tuesday said that Boeing appeared to have accepted it would not be able to certify the MAX 10 by the year end, but it remained possible that U.S. lawmakers could give it more time.

Source: Civil Aviation Authority – Qatar