The name PV Engineering was changed to Piasecki Helicopter Corporation in 1946.
After a boardroom dispute, Piasecki left Piasecki Helicopter in 1955 and formed the Piasecki Aircraft Company.

At Piasecki Aircraft, he participated in the development of the Piasecki 16H-1 the world's first shaft driven compound helicopter, the PA-59K/VZ-8P Flying Geep, the Piasecki PA-97 Helistat heavy vertical airlifter and the Piasecki X-49 experimental compound helicopter.
The name PV Engineering was changed to Piasecki Helicopter Corporation in 1946. After a boardroom dispute, Piasecki left Piasecki Helicopter in 1955 and formed the Piasecki Aircraft Company.
At Piasecki Aircraft, he participated in the development of the Piasecki 16H-1 the world's first shaft driven compound helicopter, the PA-59K/VZ-8P Flying Geep, the Piasecki PA-97 Helistat heavy vertical airlifter and the Piasecki X-49 experimental compound helicopter.
Frank Piasecki