 The Model 75 was first FAA-certified in 2013, and took the place of the Model 45XR, becoming the division's principal product.Since 2015 (as of 2017), it is the division's only product.The Model 70, introduced in 2013, is a shortened variant of the Model 75 – alternatively described as an upgraded Model 40XR, with the same modifications as used to convert the Model 45XR into the Model 75.