What was found
FLT 132 - MEX-BJX - AIRCRAFT RETURN TO PLATFORM AS A CONSEQUENCE OF LOW ACCELERATION IN BOTH ENGINES. A THROTTLE BUMP PROCEDURE WAS ACCOMPLISHED, BOTH COMBUSTION CHAMBERS WERE LUBRICATED AND BOTH ENGINE WATER TRAMPS WERE SERVICED IAW MM FSB 6-98-10. DURING OVERNIGHT SERVICE, THE PS3 FILTER WAS CLEANED AND THE PRBC AND FCU LINES WERE CHECKED ON BOTH ENGINES. ADDITIONALLY, THE FCU OF ENGINE NR 1 WAS CHANGED IAW MM 73-20-1. ENGINES WERE TESTED IAW MM 71-00-00. (M)