As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE SHUTDOWN ON FLIGHT 2949/3059, F/A NOTED SMOKE IN VICINITY OF ROW 3 UPON SHUTDOWN WHILE SUPPLEMENTAL A/C WAS OPERATING. MAINTENANCE TROUBLESHOOTING REVEALED SEIZED SUPPLEMENTAL A/C COMPRESSOR. NO OTHER INFORMATION AVAILABLE AT THIS TIME.