What was found
ON TAKEOFF, NR 3 EPR LOW. COULD NOT REACH TAKEOFF POWER, N1, N2. FUEL FLOW MATCHED OTHER ENGINES. ABORTED TAKEOFF AT 80 KNOTS. REPLACED THE EPR TRANSMITTER. EXAMINATION OF THE EPR TRANSMITTER IN THE SHOP REVEALED THAT THE TEE FITTING AT THE HIGH PRESSURE SIDE OF THE TRANSDUCER WAS CRACKED. THE CRACKED FITTING ALLOWED THE P17 PRESSURE TO ESCAPE AND, THEREFORE, THE INDICATION FROM THE TRANSMITTER WAS LOW.