As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: #2 ENGINE SIGNIFICANTLY LAGS #1 ENGINE ON INITIAL THRUST SETTING AT 50%, ON RUNWAY N1. MAINTENANCE FOLLOWED TSM 77-00-00-810-859A, ACCOMPLISHED A GENERAL VISUAL INSPECTION OF THE PS 12 SENSE LINE WITH NO DEFECTS AND NO OBSTRUCTION OF THE WEEP HOLE NOTED.MAINTENANCE CLEANED THE PS 12 SENSE LINE AND WEEP HOLE PER TSM 77-00-00-810-859A. ACCOMPLISHED A SATISFACTORY ACCELERATION CHECK PER AMM 71-00-00-710-025A.