Ryanair ( RYAAY) ( OTCPK:RYAOF) Chief Executive Michael O’Leary estimates that plane maker Boeing ( NYSE: BA) will be able to lift output of its 737 Max jetliners to 38 a month by the end of summer and possibly to 42 by October if aviation authorities approve, Reuters reported Monday.

Boeing argued that the exemption would enable quicker certification and delivery of the 737 MAX 7 and 737 MAX 10 aircraft.

The smallest of these is the Boeing 737 MAX 7, which has yet to enter service and is still awaiting certification from the Federal Aviation Administration (FAA). The jet is designed to replace the earlier Boeing 737-700,

President Donald Trump's nominee to head the U.S. Transportation Department said he will keep in place a cap on production of Boeing 737 MAX planes put in place after a mid-air panel blowout last year until he is satisfied it can be safely raised.

The Boeing 737 Max family, which entered service eight years ago, was designed to be the latest and most advanced version of the Boeing 737 family, the most successful commercial aircraft of all time.

Boeing is seeking temporary regulatory exemptions for a stall-management yaw damper (SMYD) system on the 737 Max 7 and Max 10, saying a classification change left it unable to demonstrate that the systems meet airworthiness standards.

Ryanair said it expects to take delivery of nine Boeing 737 MAX aircraft ahead of its peak summer season, fewer than expected, and as a result will cut its forecast for passenger numbers in the 12 months to March 31, 2026, to 206 million from 210 million.

President Trump’s Department of Transportation Secretary nominee has pledged to maintain a cap on Boeing 737 MAX production brought in by the FAA last year.

Lufthansa Group is overhauling low-cost carrier Eurowings with 40 Boeing 737 Max jets, marking a significant shift from its all-Airbus fleet.

The Boeing 737 Max hit a coyote while taking off, forcing it to return to Chicago O’Hare after just 40 minutes of flying.

Eurowings will replace its fleet of Airbus A319s and older Airbus A320 models with 40 brand-new Boeing 737 MAX 8 jets after Lufthansa Group confirmed the move.

Ryanair expects Boeing to produce 38 of its 737 MAX planes per month by the end of the summer and possibly up to 42 by October, subject to U.S. Federal Aviation Administration approval, Ryanair CEO Michael O'Leary said on Monday.