The PZL.4 was a Polish three-engine passenger aircraft for 10 passengers, built in PZL factory in 1932, which remained a prototype. It was the first Polish-designed and produced multi-engine plane.
The PZL.4 was a Polish three-engine passenger aircraft for 10 passengers, built in PZL factory in 1932, which remained a prototype. It was the first Polish-designed and produced multi-engine plane. (en)
PZL.4 (PZL-4) – prototyp trójsilnikowego samolotu pasażerskiego, projektu polskiego inżyniera oraz inż. Stanisława Praussa. (pl)
The PZL.4 was a Polish three-engine passenger aircraft for 10 passengers, built in PZL factory in 1932, which remained a prototype. It was the first Polish-designed and produced multi-engine plane. (en)
PZL.4 (PZL-4) – prototyp trójsilnikowego samolotu pasażerskiego, projektu polskiego inżyniera oraz inż. Stanisława Praussa. (pl)