As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT PREPARING FOR TRIP, ENGINES RUNNING ON RAMP. WHEN POWER LEVERS WERE ADVANCED AND BROUGHT BACK TO IDLE, NR 1 ENGINE UNEXPECTEDLY SHUT DOWN. FOUND POWER LEVER LOCKING TAB RETURN SPRING BROKEN ALLOWING POWER LEVER TO GO TO CUT OFF WHEN IDLE POSTION WAS SELECTED. NORMALLY, THIS TAB IS LIFTED MANUALLY WHEN CUT-OFF POSITION IS DESIRED.