As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLEED VALVE WAS OVERHAULED 2-14-97 . BLEED VALVE CAUSED #2 ENGINE TO OSCILLATE BETWEEN 20 AND 40% TORQUE. REMOVED FROM A/C YV-0-CVG-11 AND ENGINE S/N CPPS62930, T.T. 3604.20. REMOVED BLEED VALVE AND FOUND UNSERVICEABLE AND REPLACED WITH SERVICEABLE BLEED VALVE.