What was found
DURING DESCENT OF FLIGHT 7794 CREW REPORTED CAPTAINS AHRU, VHF COMM, ADF, AND TRANSPONDER FAILURES. FLIGHT LANDED UNEVENTFULLY AND PASSENGERS DEPLANED NORMALLY. THE CLEARANCE DELIVERY UNIT, FCS SWITCHING RELAY, SYMBOL GENERATOR, AND NAV UNIT WERE REPLACED ON THE PILOTS SIDE. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RETURNED TO SERVICE.