As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND 1 FAULT ON NR 1 ENGINE, SHORT TERM 73-21271. THE ALTERNATOR VOLTAGE INPUT TO THE EEC IS OUT OF RANGE. ACFT GROUNDED. PERFORMED EEC BITE TEST IAW MM 73-21-00, FAULT CODE 78273000, APPEARS TO BE AN INTERMITTENT FAULT, NO FAULTS NOTED AT THIS TIME.