As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: # 1 ENGINE COMPRESSOR STALL AT FL 370 DURING SPEED REDUCTION FROM .78 TO .76. HAPPENED TWICE WITHIN 10-12 SECONDS AND RETURNED TO NORMAL. **SUPPLEMENTAL REPORT FOR AALA202203072460: REPLACED #1 ENGINE PER TASK CARD 26L40071001. ** (CLOSED)