What was found
PDIS 623 28-40 6983 06JUN22 CDG OPEN U LOGPAGES:385994 ON DESCENT FLT 200 RECEIVED LEVEL 2 FUEL QUANTITY FAULT TANK 1/3 FUEL QUANTITY LO - NOW W/ ARRIVED AT CDG DECLARED EMERGENCY FUEL PER QRH ADVISED AS A VALID ALERT. PERFORMED FUEL MIGRATION INSPECTION/CHECK IAW AMM 28-22-00-6.TEST OK, NO MIGRATION FOUND. PERFORMED TEST FQBU IAW 28-41-00-5, FOUND SEM IN FAULT, R&R'D SEM PER AMM 28-41-92-4-0. FQBU TEST PERFORMED FEW TIMES IAW AMM 28-41-00-5 ALL TEST PASSED