As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 1590 - AFTER TAKEOFF ORD/MCO, NR 2 ENGINE EPR ROLLED BACK AND VIBRATION NOTED. ENGINE WAS SHUT DOWN AND AIRCRAFT LANDED AT ORD WITHOUT INCIDENT. REPLACED NR 2 ENGINE. PERFORMED ENGINE RUN-UP. SYSTEM GROUND CHECKED, NORMAL OPERATION. A 1ST STAGE HPT BLADE FAILED AT THE AIRFOIL. THE FRACTURE IS THE RESULT OF STRESS RUPTURE. (X)