Ryanair Holdings has re-registered its only B737-700, EI-SEV (msn 29078), as SP-RUM, moving it from the AOC of Ryanair to Polish sister carrier Buzz (Poland).

The aircraft is used by the low-cost carrier for crew training purposes and as a corporate aircraft and is not deployed into regular passenger operations. Its last flight under the Irish registration was on March 23, 2023, from Kaunas International to London Stansted. Flightradar24 ADS-B data shows that it was redeployed on April 2, flying under the Polish registration from Stansted to Glasgow Prestwick, where it is now under maintenance.

The B737-700 is configured in a single-class layout for up to 148 passengers. It is also available for corporate charters and used as a spare aircraft for Ryanair's fleet of B737-800s and B737-8-200s.

Buzz is a wholly-owned subsidiary of Ryanair Holdings and operates exclusively as a capacity provider to Ryanair. The Polish unit currently operates forty-seven B737-800s, thirteen -8-200s, and the single -700.