[1] Using the same profile as the Super-IV but only 8.6m span, and compensated with large slotted flaps, the wings were formed from two moulded halves and contained two 70 litre fuel tanks.

The design entered production as the WA-51 Pacific with a fixed tricycle landing gear.

The low-wing cantilever monoplane was powered by a nose-mounted 150 hp (112 kW) Lycoming O-320-E2A piston engine.

A variant, powered by a 160 hp (119 kW) Lycoming IO-320-B1A was called the WA-52 Europa.

Further refinements produced the 180 hp (134 kW) Lycoming O-360-A1LD powered WA-54 Atlantic.