What was found
AFTER ROTATION LEFT ENGINE HAD LOUD BANG AND SPOOLED DOWN TO AROUND 45 PERCENT N2 AUTO RELIGHT AND ENGINE RAN NORMALLY UNTIL LANDING -EMERGENCY DECLARED-. A/C RETURNED TO CVG AFTER T/O. FLTS 4484, 4485, 4492 CX AND FLTS 4472, 4478, 4519, 4484 CX ON 3/3/07 AND FLT 4212 CX ON 3/4/07.