Chelton Flight Systems, Boise, Idaho, won FAA Supplemental Type Certificate (STC) approval of its Synthetic Vision Electronic Flight Instrument System (EFIS) in the Eurocopter EC-120B. The STC was developed in conjunction with Hillsboro Aviation, and will be available in a standard two-screen system with a Primary Flight Display (PDF) and a Multifunction Flight Display (MFD) and an optional, three-screen system with one PFD and two MFDs. The system uses 3D technology to translate the terrain ahead of the helicopter, which Chelton says “helps the pilot ‘see’ aircraft position in relation to the surroundings regardless of darkness or weather conditions.” More