As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. RT ENGINE DID NOT ACHIEVE TARGET N1 ON TAKEOFF WITH AUTOTHROTTLE ENGAGED. MANUALLY ADVANCED RT THRUST LEVER, NO ADDITIONAL THRUST PRODUCED. ON CLIMBOUT PAST 5000 FT, RT ENGINE OPERATED NORMALLY AND MATCHED LT ENGINE. REPLACED RT FUEL PUMP AND RT HYDROMECHANICAL UNIT (AALA202012029014), IAW AMM 73-11-01. OPERATIONS CHECK GOOD.