DUBLIN, July 21 (Reuters) - Ryanair has decided

not to switch MAX 10 aircraft due for delivery in early 2027 to

the smaller MAX 8 aircraft following reassurances from Boeing ( BA )

that they will arrive on time, Chief Executive Michael

O'Leary said on Monday.

Boeing ( BA ) promised to tell Ryanair by the end of June whether

the new aircraft would be ready, "or we would change back and

take more additional (MAX) 8-200s," O'Leary told analysts

following the publication of results for the April-June quarter.

Boeing Commercial Airplanes CEO Stephanie Pope has

"helpfully confirmed ... in writing" that the aircraft will

arrive on time, O'Leary said.

(Writing by Conor Humphries, Editing by Louise Heavens)