N712SA Sherpa Aircraft T-411 Sherpa Aircraft Oshkosh - Wittman Regional (OSH / KOSH), USA - Wisconsin George Trussell - 28/07/2008
N712SA Sherpa Aircraft T-411 Private Oshkosh - Wittman Regional (OSH / KOSH), USA - Wisconsin Lawrence Safir - 27/07/2007
N712SA Sherpa Aircraft T-411 Private Oshkosh - Wittman Regional (OSH / KOSH), USA - Wisconsin Steve Homewood - 29/07/2006
