What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS NR 1 DFGC FAILED ON TAKEOFF ABOVE 80 KTS. NR 1 FD WENT BLANK, AT DISCONNECTED, NR 1 FMA WENT BLANK, DFGC CONTROL PANEL WENT BLANK AND ART FIRED, AFTER T.O SWITCHED TO DFGC, AP NR 2. MAINTENANCE REPORTS DFGC-1 SHOWS DUAL COMP FAILURE-DFGC 0047-DFGC AND RAM FAILURE-DFGC IAW AMM 22-01-05-101-5, ALL FUNCTIONS FROM ASSOC DFGC LOST. REMOVED AND REPLACED DFGC-1. OPS TEST GOOD.