Here is a picture of E3B-530.  This CASA-Bücker was transferred by the Air Force to the Royal Aero Club of the Balearic Islands, it never carried a civil registration.  Photo received from Pedro de la Cru.



Here is E3B-530 in January, 1976 in Son Bonet (LESB), Spain.



At one point, E3B-530 was we decorated with the famous SNOOPY aviator character.



Now, E3B-530 flies in England as G-CDRU



Brian