On Monday, December 16th, Collins Aerospace announced several significant upgrades to its proven avionics systems for various aircraft. These upgrades are to two of its most popular avionics suites, the Pro Line 21 and Pro Line Fusion advanced avionics systems. The Pro Line 21 and Pro Line Fusion are used in Beechcraft King Air variants, as well as in several Hawker aircraft. The upgrades include changes to the aircraft performance systems and the addition of several new safety features.