As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENG RUN AFTER ENG CHANGE - ECU GOES TO ALT MODE(<P>ITEM # M16 - REMOVED AND REPLACED EEC IAW AMM 73-21-15.</P><P>ITEM # M17 - REMOVED AND REPLACED WIRE HARNESS W5326 IAW WDM 80-11-21, AMM 70-00-00 AND 70-50-00. PERFORMED ENGINE RUN UP, NO DEFECTS NOTED, OPS CHECK NORMAL. IAW AMM 71-00-00.</P>)