As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF, DURING GEAR RETRACTION, THE NR 1 ENGINE STALLED AND ENGINE PARAMETERS STARTED FALLING OFF. FLIGHT RETURNED TO LGA. COMPRESSOR DAMAGE WAS FOUND DURING BORESCOPE AND THE ENGINE WAS REPLACED. THE HPC 10TH - 11TH STATOR FAILED.