Royal Navy, EHI EH101-111 Merlin HM 2, Reg. ZH857, Serial No. 50151, AugustaWestland AW159, Wildcat HMA2, Reg. ZZ516, Serial No. 521, Reg. ZZ375, Serial No. 494, formation, air-to-air, Royal Navy International Air Day, RNAS Yeovilton Air Day 2019

A formation of Royal Navy helicopters is captured in flight at the Royal Navy International Air Day at RNAS Yeovilton in 2019. The group consists of a Merlin HM2 helicopter, registration ZH857, serial 50151, and two AW159 Wildcat HMA2 helicopters, ZZ516 serial 521 and ZZ375 serial 494. The Merlin HM2 is powered by three RTM322 turboshaft engines and supports maritime patrol operations. The Wildcat HMA2 uses twin CTS800-4N turboshaft engines for naval reconnaissance and attack missions.