What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FLIGHT DIRECTOR DISAPPEARED ON APPROACH AGAIN. AIRCRAFT DIVERTED AND LANDED SAFELY AT IAD WITHOUT FURTHER INCIDENT. FOUND FAULT MSG 22-11051. ACCOMPLISHED FIM 22-11-00. REMOVED AND REPLACED NUMBER 1 FORWARD ANTENNA (AALA202401090977), NUMBER 1 AFT ANTENNA (AALA202401098436), NUMBER 2 FORWARD ANTENNA (AALA202401096029), AND NUMBER 2 AFT RADAR ANTENNAS (AALA202401090549). ALL BITE TEST PASSED INCLUDING DFCS BITE TEST.