As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3485 - DURING THE TAKEOFF ROLL IN DTW, THE LEFT ENGINE WAS SLOW TO MAKE STANDARD POWER. AFTER V, POWER DROPPED TO 80 PERCENT. WHEN SPEEDS WERE BROUGHT BACK TO 100 PERCENT ON THE LEFT ENGINE, THE TORQUE JUMPED TO 105 PERCENT AND THE BYPASS LIGHT CAME ON. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE ADJUSTED THE LEFT ENGINES SCREW X TO RELIEVE OVERSPEED GOVERNOR INTERFERENCE IAW FAC MM 71-00-30. (M)