What was found
AIR RETURN TO DTW LT FUEL VALVE CIRCUIT BREAKER POPPING. LT FUEL VALVE C/B POPPED, RESET, POPPED OPEN (UP) IMMEDIATELY (J18). MAINTENANCE REMOVED AND REPLACED LT FUEL SHUTOFF VALVE S/N OFF 819, S/N ON M10541 IAW SF340 AMM CHAP 28-22-35. OPS CHECK GOOD.