Scout Leader
I think XV121 may have been in 6 Bde AAC Flight at Barnard Castle in 1969, moving to 660 Avn Sqn when it formed at RAF Topcliffe in 1970 and moved across to BAOR with 660 Avn Sqn in 1971 to Salamanca Airfield, Soest.
The AAC Museum in MW should be able to provide more detailed and accurate info.