CPI Aerostructures, Inc. today announced that it received a purchase order from Northrop Grumman Corporation to manufacture seats for full rate production, Lots 1 and 2, E-2D Advanced Hawkeye aircraft. This purchase order, valued at approximately $5 million, is a follow-on to one received in 2011. There are a total of five seats in three different designs in an E-2D aircraft; pilot, co-pilot and three crew members.