HB-OIA Piper L-4J Grasshopper Private Birrfeld (LSZF), Switzerland Derek Heley - 08/04/2009
HB-OIA Piper L-4J Grasshopper Private Birrfeld (LSZF), Switzerland Bill Teasdale - 08/04/2009
HB-OIA Piper L-4J Grasshopper Private Ecuvillens (LSGE), Switzerland Andy Davey - 28/06/2008
