As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO IND DUE TO THE FLIGHT CREW REPORTING THAT AFTER TAKEOFF IN THE CLIMB JUST BEFORE THRUST REDUCTION EXPERIENCED A COMPRESSOR STALL ON THE #2 ENGINE. THE AIRCRAFT LANDED SAFELY AT IND AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE REPLACED THE #2 ENGINE PER JOB CARD 26L40071001 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO ISSUES NOTED.