CANT Z.506 - list of versions
Z.506 - prototype (built one piece)
Z.506A - civilian version
Z.506B - military version (built 324 pieces)
Z.506C - civil version
Z.506S - SAR version (post-war conversion from version Z.506B)
Z.506 Landplane - a machine converted to a ground version for Mario Stoppani's attempt to break the record in flight endurance. It did not happen due to bad weather.
Z.509 - bigger and heavier version Z.506 (built 3 pieces)
Source:
http://en.wikipedia.org/wiki/CANT_Z.506
www.archeologiaindustriale.it
Z.506 - prototype (built one piece)
Z.506A - civilian version
Z.506B - military version (built 324 pieces)
Z.506C - civil version
Z.506S - SAR version (post-war conversion from version Z.506B)
Z.506 Landplane - a machine converted to a ground version for Mario Stoppani's attempt to break the record in flight endurance. It did not happen due to bad weather.
Z.509 - bigger and heavier version Z.506 (built 3 pieces)
Source:
http://en.wikipedia.org/wiki/CANT_Z.506
www.archeologiaindustriale.it