As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ABNORMAL ENGINE INDICATIONS NUMBER 2 ENGINE AT ALTITUDE AND IN DECENT LOUD NOISES/BANGING OBSERVED NUMBER ONE DROPPED OFF TO APPROXIMATELY 54 PERCENT. AT IDLE ALL INDICATIONS NORMAL. CONTINUED IDLE OPERATION UNTIL LANDING. EMERGENCY WAS DECLARED AND WAS NOT OVERWEIGHT FOR LANDING. **SUPPLEMENTAL REPORT FOR AALA202202047274: REMOVED AND REPLACED NUMBER 2 ENGINE OPERATIONS CHECK LEAK CHECK GOOD PER JOB CARD 08L40072003** (CLOSED)