[1] The BS.22 was evolved from the earlier Bonomi BS.15 Bigiarella glider, though with the addition of a small flat twin engine which drove a pusher propeller.
[3] The wing had a constant chord, unswept central section and straight tapered outer panels with rounded tips.
Its conventional undercarriage had two balloon tyre mainwheels, each mounted on V-form split axles attached to the skid and with a shock absorbing strut fixed to the lower longeron.
Both rear control surfaces were much larger in area than their fixed counterparts and balanced; the rudder extended to the keel and operated in an elevator cut-out as the tailplane was mounted on the fin just above the fuselage, braced from above and below.
[2] The Alzavola could take off under its own power but could also be launched, with its wheeled undercarriage retracted or removed, by bungee cord, winch or air-tow.