What was found
A-T DISCONNECTED. NO LAND, 3 IND EICAS MSG AND STATUS MSGS. PERFORMED LT & RT F AUTO THROTTLE SERVO LOOP GROUND TEST , CONDITION NORMAL. PRESENT LEG FAULTS SHOWED RADIO ALT MSG 22-11920, 22-11940. CONCURED WITH S FOLM THAT ISSUE IS WITH LT & RT RADIO ALT AND NOT AUTO THROTTLES. REPLACED RT RADIO ALT TRANSCEIVER IAW MM. LT RADIO ALT IS CONSIDERED INOP. ACFT AUTOLAND STATUS DEGRADED. MSG 22-11920. FIM34-33 TASK 819. REPLACED LT RADIO ALT TRANSCEIVER IAW MM. GROUND TEST PASSED BOTH TRANSCEIVER. NO STATUS MSG. NO EXISTING FAULT. OPERATIONS CK OK.