As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON CONNECTING EXTERNAL POWER RIGHT ENGINE SPOOLED TO FLIGHT IDLE FOR FIVE SECONDS BEFORE SPOOLING BACK DOWN TO GROUND IDLE BEFORE SHUTDOWN. PERFORMED ENGINE 2 IDLE RUN. NO DEFECTS NOTED AFTER SHUTDOWN WHEN TRANSFERRING POWER, REF B767 AMM 71-00-00. OPERATIONS CHECK GOOD AT THIS TIME.