A version of the Gardan GY.20 with a higher all up weight was built by J.Barritault in 1956.
It was known as the Barritault JB.01 or Avion JB. It was registered F-PHUC and F-PJKA CN.01, and powered with a Continental C90-8F.
It was exported to the UK as G-ATPV cn A.155.
All Aero 