Improved civil versions quickly followed on from the initial production model; in 1981, a "A109A Mk2" with a widened cabin was made available to operators. In 1993, the "A109 K2" was introduced using a new powerplant, a pair of Turbomeca Arriel 1K1 engines; this was followed by the "A109 Power", broadly similar to the K2 except for the use of Pratt & Whitney Canada PW206 engines instead, in 1996. According to AgustaWestland, the A109 Power was in service in 46 countries by 2008. In 2006, an enlarged variant, the "A109S Grand", was introduced.