As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT EEC CAUSES POWER SURGES ON THE RIGHT ENGINE. DEFERRED PER MEL 73-21-1. RAN THE RIGHT ENGINE, CND. PERFORMED HMU SOL TEST IAW MM OK. CHECKED EEC HARNESS AND INPUTS IAW SL 120-072-0001 EMB EEC TS GUIDE. NO DISCREPANCIES NOTED. SWAPPED LEFT AND RIGHT NH SENSORS FOR TS. RAN ENGINES. OPS CHECKS GOOD AT THIS TIME.