As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - FLT 1812 - ON TAKEOFF, EXPERIENCED COMPRESSOR STALL ON RIGHT ENGINE JUST AT ROTATION. ENGINE WAS SURGING AND VIBRATING. TOWER AND CABIN REPORTED FLAME OT OF ENGINE. STABILIZED WHEN THROTTLE WAS RETARDED. RETURNED AND LANDED PDX WITHOUT INCIDENT. REPLACED RIGHT ENGINE. SYSTEM GROUND CHECK NORMAL OPERATION. (M)