What was found
JUST PRIOR TO LEVELING OFF AT FL 270, RT FUEL TRANSFER PRESSURE LOW ANNUNCIATOR BEGAN CYCLING ON AND OFF ERRATICALLY. FUSELAGE TANK ALMOST EMPTY, AND TRANSFER PUMP SWITCHES WERE IN AUTO. WITHIN ONE MINUTE, THE LT SIDE DID, AS WELL. ACCOMPLISHED ABNORMAL CHECKLIST AND TRANSFER PUMP LIGHTS EXTINGUISHED. CHECKED OPERATION OF LT & RT LOW LEVEL FLOAT SWITCHES AND FUEL PRESSURE SWITCHES, BOTH CHECK GOOD. PUT 50 GALLONS OF FUEL IN FUSELAGE TANK, PERFORMED FUEL TRANSFER CHECKS IN BOTH AUTO AND ON, BOTH CHECK GOOD. ALL WORK DONE IAW MM 28-01-00 & 28-21-00.