What was found
WHILE ACCOMPLISHING T/C 78273000 FOUND FAULT ON NR 2 ENGINE SHORT TIME 73-11272. THE ALTERNATOR VOLTAGE INPUT TO THE EEC IS OUT OF RANGE. FAULT FOR LAST 2 FLIGHTS. ACFT GROUNDED. REMOVED EEC ALTERNATOR AND ROTOR REF MM 73-21-08. INSTALLED NEW ALTERNATOR AND ROTOR REF MM 73-21-08. IDLE POWER LEAK CHECKED NORMAL REF MM 71-00-00. NO LEAKS NOTED. EEC BITE CK NORMAL REF MM 71-00-00 AND EEC BITE TEST NORMAL REF MM 73-21-00. NO FAULTS. ETOPS SIGNIFICANT SYS GROUND VERIFICATION SUCCESSFUL.