What was found
ECAM FOR ENGINE 1 EPR MODE FAULT APPEARED MULTIPLE TIMES DURING CRUISE. AFTER SWITCHING TO N1 MODE ECAM FOR EPR MODE RECOVERABLE WOULD DISPLAY. AFTER EPR MODE RE-ESTABLISHED, WOULD AGAIN GET AN ENGINE 1 EPR MODE FAULT. WENT THROUGH 5 CYCLES OF THIS BEFORE ELECTING TO CONTINUE DURATION OF FLIGHT IN N1 MODE. POST FLT REPORTED THAT ENGINE 1 EPR MODE FAULT AND P20/T20 PROBE HEATER, 115 VAC POWER SUPPLY. SO PERFORMED EEC 1 A & B HEATER TEST RESULT PASSED TSM 73-21-71 & AMM 73-21-00.