What was found
DUAL EFIS FAILURE IN-FLIGHT. BOTH DISPLAYS WENT DARK AND FLASHED DPU FAIL. REMOVED DPU-84 P/N 622-9682-004 S/N D3CP, INSTALLED SERVICEABLE DPU-84 P/N 622-9682-004 S/N 4SUW AND REPLACED DPU-84 CONNECTOR P2 PIN 159 CONTACT P/N 372-2514-180 IN ACCORDANCE WITH ROCKWELL COLLINS EFIS-84 INSTALLATION MANUAL 523-0775965. GROUND OPERATIONAL CHECK SATISFACTORY IN ACCORDANCE WITH ROCKWELL COLLINS EFIS-84 INSTALLATION MANUAL 523-0775965.