efe-epaBy Oliver Griffin Madrid Desk

Ryanair Holdings PLC said delays in deliveries of Boeing Co.'s 737 MAX passenger jet will lower growth next summer, forcing Europe's largest budget airline to close some of its bases and make cuts at others this winter, according to a report from Dow Jones Newswires supplied to Efe on Tuesday.

The carrier said Tuesday it now expects passenger growth of 3% in the summer of 2020, down from an earlier forecast of 7%. Ryanair blamed the lower guidance on expected delays in receiving a fleet of 737 MAXs. The news represents the latest ripple effect across the aviation industry of the grounding of the Boeing jet and the continued uncertainty on when the plane will be able to fly again.

The 737 MAX is the latest version of Boeing's best-selling, single-aisle passenger jet. It competes with a version of Airbus SE's narrow-body A320. The two planes have grown into the aviation industry's workhorses, prized by airlines for their fuel-efficient engines, expanded range and smaller size -- allowing flexibility to serve smaller markets.

The jet was grounded earlier this year following two fatal crashes, one in Ethiopia earlier this year and one off the coast of Indonesia last year respectively. Boeing is working on a software fix to its flight control system and will need regulatory approval around the world once it has done that.

Ryanair said it remains committed to the 737 MAX jets and now expects it will return to flying service before the end of 2019, though it added that an exact date remains uncertain. The airline is a large buyer of the MAX 200, a variant of the new jet, having ordered 58 of the aircraft, but is now planning its 2020 summer schedules based on taking up to 30 by the end of May 2020.

The airline, which had been due to receive its first MAX planes this spring, had already warned in May that profit would be dented this year because of the grounding, the Dow Jones report added.

Ryanair said the grounding would reduce its overall fleet size next year. It expects to add 30 jets to its network by next summer, instead of the planned 58. This also means that passenger numbers in the year to March 2021 are now expected to be around 157 million, down from 162 million it previously forecast.

The company said it is starting talks with its airports to determine which of Ryanair's underperforming or loss-making destinations could be cut or closed. The airline said it would start such pruning in November.

Other airlines have also warned about the impact of the MAX grounding. On Monday American Airlines Group Inc. said issues related to jet are expected to continue to cause significant disruption to customers and financial costs, while Norwegian Air Shuttle ASA last week said it would book an accounting charge and that growth would be weaker because of the grounding. EFE-EPA