A method for alerting a pilot of a rotorcraft having a tail rotor to conditions sufficient to cause a loss of tail rotor effectiveness, the method comprising: at a processor (i) coupled to a flight management system, an air data computer, weather sources, a performance database and sensors, and (ii) comprising a weather model module, a ground speed module, a vortex logic module and a memory, continually receiving and processing, for the rotorcraft, navigational data, wind velocity and wind direction, rotorcraft status and rotorcraft altitude; determining that the rotorcraft is in a LTE zone, defined as experiencing the conditions sufficient to cause LTE, based on (i) a combination of the wind velocity and the wind direction with respect to a heading of the rotorcraft, including determining whether the wind direction is coming toward the rotorcraft from about 120 degrees to about 330 degrees with respect to the rotorcraft, and (ii) a forward rotorcraft airspeed being at or below a predetermined minimum forward airspeed threshold; overlaying, on a cockpit display, a visually distinguishable symbol indicative of the wind velocity in the LTE zone and the wind direction in the LTE zone; wherein the method further comprises, the processor: acquiring, through the FMS, wind models and predicted ground speed for each waypoint of a plurality of waypoints along a navigation route, and in response thereto, predicting a wind velocity and wind direction for each waypoint of said plurality of waypoints, determining that a waypoint along a projected flight course for the rotorcraft is within a LTE zone; and visually altering, on the cockpit display, a symbol indicative of the waypoint responsive to determining that the waypoint is in the LTE zone. at a processor (i) coupled to a flight management system, an air data computer, weather sources, a performance database and sensors, and (ii) comprising a weather model module, a ground speed module, a vortex logic module and a memory, continually receiving and processing, for the rotorcraft, navigational data, wind velocity and wind direction, rotorcraft status and rotorcraft altitude; determining that the rotorcraft is in a LTE zone, defined as experiencing the conditions sufficient to cause LTE, based on (i) a combination of the wind velocity and the wind direction with respect to a heading of the rotorcraft, including determining whether the wind direction is coming toward the rotorcraft from about 120 degrees to about 330 degrees with respect to the rotorcraft, and (ii) a forward rotorcraft airspeed being at or below a predetermined minimum forward airspeed threshold; overlaying, on a cockpit display, a visually distinguishable symbol indicative of the wind velocity in the LTE zone and the wind direction in the LTE zone; acquiring, through the FMS, wind models and predicted ground speed for each waypoint of a plurality of waypoints along a navigation route, and in response thereto, predicting a wind velocity and wind direction for each waypoint of said plurality of waypoints, determining that a waypoint along a projected flight course for the rotorcraft is within a LTE zone; and visually altering, on the cockpit display, a symbol indicative of the waypoint responsive to determining that the waypoint is in the LTE zone.