As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAKEOFF WAS ABORTED AT APPROXIMATELY 50 KNOTS AFTER THE NR 2 ENGINE LOST POWER. THE POWER LOSS WAS ACCOMPANIED BY A LOUD POP. THE AIRCRAFT WAS RETURNED TO THE GATE. MAINTENANCE FOUND THE NR 2 ENGINE TURBINE HAD FAILED. THE NR 2 ENGINE WAS REMOVED AND REPLACED. *S/D* SHOP FINDINGS REVEALED A T-4 BLADE FAILURE.