;A.101D:The original concept by
Filippo Zappata exhibited in model form at the Milan Trade Fair in April 1958, also designated AZ.101, acknowledging Zappata's role in the design process. Power was to have been supplied by three
Turbomeca Turmo engines. ;A.101G:The sole prototype powered by three
Rolls-Royce Gnome H.1400 turboshaft engines ;A.101H:A projected up-rated version, stretched by , with tricycle undercarriage and powered by three
General Electric T58 turboshaft engines. ==Specifications (A.101G configuration)==