Compact and reliable, the SN3500 Primary Navigation Display is a sunlight readable, ultra-wide-angle LED-backlit display which combines advanced navigation capabilities with a full range of safety functions.Incorporating the equivalent of a four-inch screen in a three-inch instrument, the SN3500 improves situational awareness by presenting compass, map, flight plan and RMI data in a bright, crisp, easy-to-read format. With LED backlighting the SN3500 is a proven and reliable drop-in replacement for your current 3-inch HSI. The SN3500 is both an easy and affordable retrofit for your aircraft or rotorcraft. Available with night vision option and TACAN support as well. Operational & Functional Benefits Bright, high-resolution, sunlight-readable LED-backlit display 180-degree vertical and lateral viewing angle GPSS/Roll Steering option included Upgradeable system combines navigation with safety options such as weather information from an L-3 Stormscope® >10,000 hour MTBF Internal Jeppesen NavData™ database Full-color moving map Nav TSO’d and STC approved for use as a primary heading and Nav display Vibration-resistant version optional for helicopter operations Optional TACAN interface shows bearing and distance from one or two sources. Compatible with ARINC 429, ARINC 419 or XYZ Synchro output from TACAN receivers. NVIS option available Reversionary Attitude software option