As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 3500 AGL AND 74 PERCENT TORQUE AIRCRAFT COMPRESSOR STALLED, TORQUE FLUCTUATED AND RETURNED TO NORMAL, NOSE OF AIRCRAFT SWUNG 15 DEGREES TO THE LEFT. AIRCRAFT POWER REDUCED AND THEN RETURNED TO CRE BASE. MAINTENANCE REMOVED AND REPLACED ENGINE ASSEMBLY. (M)