10/31/2012. Remarks by Walter van Tilborg: "The A-1 was a light aircraft design of Frank Christensen and Herb Andersen and although strongly resembling the Piper PA-18 Super Cub, the Husky was a new design with many detail and structural changes and more metal skinning. The prototype first flew on May 31, 1986 and production deliveries commenced in 1987, initially by Christen Industries, Inc. In 1989 the rights were purchased by the Dynac International Corporation and in 1991 production rights were sold to Aviat, Inc (from 1996 known as Aviat Aircraft, Inc.).

A-1A Husky. This was the initial model and was powered by an 180 hp Lycoming O-360-C1G (later also O-360-A1P) engine. The type was often used for glider and banner towing and was initially referred to as the CIA-1 (Chisten Industries Model 1), but later became known as the A-1. It remained in production together with the A-1B version.
A-1A Acro-Husky. This version was announced in 1992. It was an aerobatic variant of the baseline A-1 with an 180 hp AEIO-360 engine, clipped wings and stressed built for +6/-3G. Possibly this model never progressed beyond the project stage.
A-1B Husky. Introduced by Aviat Aircraft in 1997 with increased operating weights, stronger wing spars and a heavy duty tail wheel. The A-1B model was also fitted with a fuselage cargo door and the improved cockpit featured a heater and de-icing system for the windshield. The engine was an 180 hp
O-360-A1P engine and first deliveries were made early-1998. From 2005 onwards the Husky was built with modified (extended) flaps and increased chord (but shorter) ailerons for a better roll rate.
A-1B-160 Husky. Introduced in 2005, this lower powered A-1B version had an 160 hp Lycoming IO-320 engine, had improved ailerons, and was available with or without wing flaps. It augmented the Husky Pup model.
A-1B-200 Husky MD. The prototype for this more powerful version was flown in August 2004. This model was based on the improved A-1B with the new ailerons and flaps, but was fitted with a 200 hp Lycoming IO-360 series engine. The Husky MD offered a much better hot and high performance.
A-1C-180 Husky. Improved version of the A-1B model with increased weight and an 180 hp Lycoming O-360-A1P. Equipment included airbags, larger entry doors, upswept wing tips, improved ailerons, better seats.
A-1C-200 Husky. Similar to A-1C-180 but with a 200 hp IO-360-A1D6 engine.
Husky Pup. Introduced in 2003 by Aviat Aircraft, Inc. This was a cheaper version based on the A-1B model and fitted with an 160 hp Lycoming
O-320-D2A engine, a fixed pitch propeller was and not equipped with landing flaps or a vacuum pump."