"While it is disappointing that we have delays, while it is disappointing that the growth for next year will be slightly slower than we had originally planned, we remain confident in the aircraft. We still think it is a great product," O'Leary told a conference call with investors.

"As soon as we can reasonably organize these deliveries with Boeing we would intend to take all of the 135 firm aircraft we have ordered over the next five years," he said.

(Reporting by Conor Humphries; editing by Jason Neely)

Stocks treated in this article : Boeing Company (The), Ryanair Holdings