What was found
FLT 419 - LAS TO COS - DURING CRUISE FLIGHT CREW REPORTED AND DECLARED EMERGENCY AND DIVERTED THE FLIGHT BACK TO LAS WHERE IT LANDED SATISFACTORY WITHOUT INCIDENT DUE TO NR 1 FUEL QTY IND 0, FUEL INBALANCE, FUEL 1 LOW LEVEL EICAS MSGS. MX CONTROL AUTHORIZED FLIGHT CREW TO RELEASE THE AIRCRAFT IAW MEL 28-40-00/2. 10-12-07 ON 09/06/2007 THE AIRCRAFT WAS FLOWN TO ONT FOR FURTHER INSPECTION. MX PERSONNEL PERFORMED NR 1 FUEL LOW LEVEL OPERATIONAL CHECKS AND SATISFACTORY CHECK GOOD AND AIRCRAFT WAS RELEASE TO RETURN FOR SERVICE IN AIRWORTHY CONDITIONS.