This was in operation for the Biafra Air Force during the war in Nigeria. It got damaged by rocket fire at Port Harcourt in September 1967 and somehow found its way to Sao Tome where attempts were made to repair it and get it to the USA. I saw a TV documentary about this at some point. There was a problem with the paperwork and it never went and ended up as an instructional airframe with the Nigeria Air Force.