What was found
SPI - CREW ELECTED AN AIR TURN-BACK AFTER TAKEOFF DUE TO LEFT ENGINE TORQUE SURGES OF PLUS OR MINUS 200 FEET/POUNDS. AFTER AN UNEVENTFUL LANDING, MAINTENANCE REPLACED THE FUEL CONTROL UNIT. POWER RUNS WERE SATISFACTORY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SPI - CREW ELECTED AN AIR TURN-BACK AFTER TAKEOFF DUE TO LEFT ENGINE TORQUE SURGES OF PLUS OR MINUS 200 FEET/POUNDS. AFTER AN UNEVENTFUL LANDING, MAINTENANCE REPLACED THE FUEL CONTROL UNIT. POWER RUNS WERE SATISFACTORY.