As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXCESSIVE VIBRATION AFTER TAKEOFF - DURING CLIMB NR 3 ENG VIBRATED AND LOST POWER. DECLARED EMERGENCY. RETURNED TO ROC. FOUND TURBINE WHEEL DAMAGED. REMOVED AND REPLACED ENGINE. CORRECTIVE ACTION - REMOVED AND REPLACED #3 ENGINE PN JT8D-7B OFF S/N 653870, TO JT8D-7B ON S/N 653316 IAW B727 MM 71-00.