As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI - CLIMBING THROUGH 28,500 FEET, THE NR 1 ENGINE BEGAN VIBRATING ALONG WITH THE ASSOCIATED FUEL LEVER. NR 1 TGT ROSE TO APPROXIMATLY 540 DEG. ENGINE WAS SHUT DOWN, FLIGHT LANDED WITHOUT INCIDENT. UPON INSPECTION FOUND SECOND STAGE LOW PRESSUR TURBINE DAMAGED. REMOVED AND REPLACED #1 ENGINE. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. ENGINE VENDOR CONFIRMED LP 2 COMPRESSOR BLADE FAILURE.