As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR2 ENGINE WOULD NOT MAINTAIN TAKEOFF TARGET N1 OF 96.9. INITIALLY NR2 N1 INDICATED 96.9 WITH POWER LEVER AT FULL FWD BUT IMMEDIATELY DROPPED TO AND MAINTAINED 94.4. NR1 ENGINE MAINTAINED 96.9 WITH FULL POWER APPLIED. ADJUSTED NR2 ENGINE BELL CRANK ASSY IN REAR BAY. ENGINE OPS CHECK GOOD AT THIS TIME. ALL WORK DONE IAW MM CH 76-10-00 AND 71-00-00.