The Posnansky/Fronius PF-1 White Knight is a Swiss/American FAI Standard Class high-wing, T-tailed, single-seat glider that was designed and constructed by and later greatly redesigned by Posnansky and .
The Posnansky/Fronius PF-1 White Knight is a Swiss/American FAI Standard Class high-wing, T-tailed, single-seat glider that was designed and constructed by and later greatly redesigned by Posnansky and . (en)
The Posnansky/Fronius PF-1 White Knight is a Swiss/American FAI Standard Class high-wing, T-tailed, single-seat glider that was designed and constructed by and later greatly redesigned by Posnansky and . (en)