As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE EEC BITE SHOWS SHORT TERM FAULT 73-20101. INTERNAL EEC FAULT LOGGED MULTIPLE TIMES IN LAST 10 LEGS. ACFT GROUNDED. ACCOMPLISHED T/S IAW FIM 73-21, TASK 807 - INITIAL EVALUATION CONFIRMED FAULT 73-20101 WITH NO OTHER FAULT CODES. REPLACED NR 1 ENGINE EEC IAW MM 73-21-60-000-801-F00/ MM 73-21-60-400-801-F00. VERIFIED EEC SOFTWARE 2044M25P15 INSTALLED. PERFORMED FADEC TEST IAW MM 73-21-00-700-801-F00 - ALL SUBTESTS PASS.