As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE TAXING FOR T/O ACFT BEHIND STATED FLAMES COMING OUT OF THE NR 2 ENGINE. ALL ENGINE PARAMETERS NORMAL. CFR FIRE, RESCUE DID NOT OBSERVE ANY FLAMES OR SMOKE. WHILE TAXING FOR T/O AC BEHIND STATED FLAMES COMING OUT OF THE NR 2 ENGINE. ALL ENGINE PARAMETERS NORMAL. CFR FIRE / RESCUE DID NOT OBSERVE ANY FLAMES OR SMOKE. PERFORMED FIM TASK 71-05 TASK 811. NO DEFECTS NOTED. PERFORMED ENGINE RUN. OK TO CONTINUE SERVICE.