What was found
(CAN) ON AUGUST 4, THE FLIGHT CREW REPORTED A TORQUE SPLIT BETWEEN BOTH ENGINES WITH AN ENGINE OUT WARNING THAT LASTED APPROXIMATELY 5 SECONDS, AND THEN RECOVERED. THE ACFT RETURNED TO BASE. ENGINE ELECTRONIC CONTROL CONNECTORS WERE CLEANED. THE ACFT WAS RETURNED TO SERVICE ON AUGUST 5 AND FLEW 5 HRS WITHOUT PROBLEMS. ON AUGUST 6, THE TORQUE SPLIT BETWEEN BOTH ENGINES RE-OCCURRED WITH A MASTER CAUTION, WARNING LASTING ABOUT 3 SECONDS BEFORE RECOVERING. THE MAINTENANCE TROUBLESHOOTING REVEALED THAT THE ELECTRONIC ENGINE CONTROL CONNECTORS OF THE NR 1 AND NR 2 ENGINES DISPLAYED EITHER 1 OR 2 CORRODED PINS AND/OR CONTAMINATED WITH OIL AND ONE CONNECTOR PARTIALLY UNTORQUED. TROUBLESHOOTING IS STILL ONGOING.