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FS2004/FSX FsRaas (Runway Awareness and Advisory System), v2.0. The Runway Awareness and Advisory System (RAAS) is an electronic detection system developed by Honeywell. It provides flight crew members with information concerning the aircraft's position relative to an airport's runway during taxi, takeoff, final approach, landing and rollout to improve situational awareness and reduce the likelihood of a runway incursion. By Dongjin Shin.