The E-2 is the last fixed-wing carrier-borne aircraft in the U.S. Navy that lacks a Heads-Up Display (HUD), this will change with the E-2D Hawkeye Cockpit Technical Refresh (HECTR program.
The upgrade by Northrop Grumman Aerospace Systems (NGAS) is necessary as the E-2D Integration Navigation, Controls and Displays System (INCDS) cockpit will not support the E-2D mission in the Delta System Software Configuration (DSSC) 6 timeframe.
The HECTR program also aims to reduce the cockpit workload of the Hawkeye crew due to the addition of aerial refueling capability.
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