Enhanced Up-front Control Display Unit (E-UFD) The AH-64D EUFD is currently in production under a multiyear contract to Boeing for the Apache "D" program. Over 700 units are expected to be produced. The EUFD is approximately 3" x 6" matrix LED display used for data entry. A companion Keyboard Unit (KBU) provides a keypad data entry with a scratchpad single line display of 32 characters.