What was found
ENROUTE TO KSHV IN CLIMB AT APPROX FL 240 THE ECAM SHOWED R FUEL LO LEVEL. WE DID ALSO GET THE RED LIGHT ON THE OVERHEAD. RETURNED TO MEM AND THE INDICATION WENT AWAY AT 5000 FEET. THE INDICATION DID NOT RETURN. EMERGENCY DECLARED. AMM 28-42-00-05-02 PERFORMED OPERATIONAL BITE TEST OF FUEL QUANTITY INDICATION SYSTEM. TEST PASSED. NO FAULTS FOUND. REMOVED, REPLACED AND OPS CHECKED R/H OUTER LOW LEVEL SENSOR (606QJ) IAW AMM 28-46-21-04, OPS CHECKS GOOD. AMM 28-46-00-05-02, PERFORMED FUEL LVL WARN OPS TEST OK.