As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENG EEC BITE TEST SHOWS FAULT MAINT MSG 73-21271 "THE ALTERNATOR VOLTAGE INPUT TO THE EEC IS OUT OF RANGE" SHORT TIME FAULT, DEFERRED PER TC 78273000. GROUNDED - YES. REF FIM 73-27 TASK 804. ACCOMPLISHED #1 EEC BITE, NO CURRENT FAULTS. FAULT MESSAGE 73-21271 SHOWS IN LEG 6. ACCOMPLISHED #1 ENGINE IDLE RUN. ACCOMPLISHED #1 EEC BITE, NO CURRENT FAULTS. THIS CLEARS PLT. GROUND VERIFICATION, VERIFIED.