The Trimble 2101 Approach Plus is a Dzus rail-mount, GPS-based flight management and navigation system for commercial and corporate avionics. The system has been improved to ease pilot workload during approaches. With the 2101 Approach Plus, flying approaches with procedure turns and holding patterns is simply a matter of keeping a needle centered. The unit's 12-channel GPS receiver keeps jamming and interference from communications radios to a minimum. An ultra high-contrast display reflects only 5 percent of surface light for maximum readability in most sunlit conditions.