As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN PROPELLER LEVERS AT MAX FOR LANDING, RPM SPLIT MORE THAN 30 RPM. NR 1 ENGINE 1175 AND NR 2 AT 1120 RPM. GROUND RAN AIRCRAFT IAW GROUND RUN UP MANUAL AT MIN AND MAX POWER ALL PARAMETERS WITHIN LIMITS, OPS CHECKED GOOD, OK FOR SERVICE.