As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT NR 4032 - AIRCRAFT RETURNED TO GATE AFTER FLIGHT CREW NOTICED TORQUE FLUCTUATION BOTH ENGINES PRIOR TO TAKEOFF. PIT/MX CONDUCTED ENGINE GROUND RUNS IAW MM 71-00-00. OPS CHECK GOOD. UNABLE TO DUPLICATE DISCREPANCY. AIRCRAFT RETURNED TO SERVICE. (M)