As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW ABORTED TAKE OFF FOR ASYMMETRICAL ENGINES SPOOL UP, NEVER RETURNED TO GATE OR CONTACTED MOC UNTIL LANDING IN THE NEXT CITY. ENGINE ACCELERATION TEST DUE TO PREVIOUS RTO. PERFORMED ACCELERATION CHECK ON BOTH ENGINES AND NO DEFECTS WERE FOUND IAW AMM 71-00-00.