As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
During climbout of MDW noticed that L/H engine torque was fluctuating 3%. Fluctuations then went to 5% swings. Ran checklist and put in T/M lockout. With T/M lockout engine still fluxed +/- 3% with prop sync on and off.R/R L/H engine HMU IAW SAAB AMM