Safety
NASA Testing GA CFIT Avoidance Technology
iGCAS offers both an audible and visual warning of approaching terrain.

Researchers from NASA’s Armstrong Flight Research Center are testing a ground-collision-avoidance technology for general aviation called the improved Ground Collision Avoidance System (iGCAS), to offer pilots both an audible and visual warning of approaching terrain. The beta version AIN viewed last week at AirVenture 2015 was installed on an iPhone; a production version could be integrated into either the PFD or MFD of a glass-cockpit aircraft.