What was found
ENGINE POWER ROLLED BACK. AFTER A NORMAL TAKEOFF AND WHILE CRUISING AT 26,000 FEET, WITHOUT ANY INDICATIONS OF SOMETHING GOING WRONG, THE RT ENGINE ROLLED BACK, OR THE ENGINE’S POWER WAS REDUCED WITHOUT ANY PILOT’S INPUTS. N1 & N2 STILL TURNING OR ROTATING AND THE RT ENGINE STILL PRODUCING, SOME POWER. DEEC FAILED GROUND TEST PER LMM72-00-00, 76-10-02REV 12 DATED MAY 31/13