Radar Atlas called the Flight Ronin34, but FlightAware said it was Ronin42. The info is on the same page. IMO, this is not a mistake, but a comm.

What is RONIN? Some movie?

Or this wiki?

A rōnin (浪人, "drifter" or "wanderer")[1][2] was a samurai without a lord or master during the feudal period (1185–1868) of Japan. A samurai became masterless upon the death of his master or after the loss of his master's favor or privilege.[3][4]

In modern Japanese usage, usually the term is used to describe a salaryman who is unemployed or a secondary school graduate who has not yet been admitted to university.

Or this:

imdb.com›title/tt0122690/

Ronin is the Japanese word used for Samurai without a master. In this case, the Ronin are outcast specialists of every kind, whose services are available to everyone - for money.