As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 278 - MEX-CJS - AIRCRAFT RETURNED TO PLATFORM AS CONSEQUENCE OF THRUST PROBLEM OF ENGINE NR 2. WHEN CAPTAIN TRIED TO MAKE EQUAL THE THRUST OF ENGINE TWO IT WAS UNDER 10 PERCENT. PERSONNEL REVIEW THE EPR'S TRANSMITTER AND THE PT2 AND PT7 LINES, ALL CORRECT. THERE WAS PERFORMED A TRIMMING AND RINGING TEST TO BOTH ENGINES IAW MM MD-80 71-00-01 76-11-00. (M)