DUBLIN, Oct 1 (Reuters) - Ryanair on Tuesday

said it has not been affected by an issue flagged by the U.S.

National Transportation Safety Board regarding Boeing 737

rudder components that could pose safety risks.

"Ryanair is not affected by the component issue referred

to," a spokesperson for the airline, one of Boeing's ( BA ) largest

customers, said in an email. "Ryanair operates a fleet of 581 x

737 aircraft, none of which have these components."

(Writing by Conor Humphries, Editing by Louise Heavens)