What was found
FLIGHT 7770 ORD TO YOW T/O AT 80 KTS EICAS MESSAGE "NO T/O DATA, ENG TLA NOT TOGA" TAKE OFF ABORTED, MESSAGES CLEARED. MX CTRL CALLED, NO CORRELATION ON THE CMC PAGE OF THE MFD. HOLDING SHORT FOR SECOND T/O EICAS MESSAGE LG NO DISPATCH. RTG, MX FOUND LOOSE CONNECTOR AT NR 3 BRAKE TEMP SENSOR. T/O AT 80 KTS EICAS MESSAGE "NO T/O DATA, ENG TLA NOT TOGA" TAKEOFF ABORTED AGAIN, MESSAGES CLEARED, NO CORRELATIONS ON CMC. T HIRD T/O OK. MX IN ORD COULD NOT DUPLICATE. DID NOT REPEAT.