=only modyfied by Kasper into BKB1-Aif the BKB design was ever copied without modification.
+W.Kasper BEKAS-N (fly tested by Kasper)
+W.Kasper (fuselage) and Madsen (wings),
imported from Arizona to Rzeszow,
after deep restoration 4 car towings (exellent flys !)
was destroyed after 20 sec. aerotow (WILGA 104).
PS=we have compleet BKB1/BEKAS-N documentation...