As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE CREW ADVISED AT 500 FEET AGL THE FUEL LOW LEVEL RESERVOIR LIGHT ILLUMINATED, THE CLIMB WAS CONTINUED TO 1500 FEET, AN EMERGENCY WAS DECLARED AND THE ACFT RETURNED WITHOUT INCIDENT TO DEPARTURE. MX TROUBLESHOOT THE PROBLEM AND FOUND FAULTY RESERVOIR LOW FUEL LEVEL FLOAT SWITCH. REMOVED AND REPLACED RESERVOIR LOW FUEL LEVEL SWITCH IAW 28-41-00 PAGE 201 PARAGRAPH 4. GROUND RUN OPS CHECK OF RESERVOIR LOW FUEL LEVEL SWITCH COMPLETED-OPS CHECKED GOOD-NO DEFECTS NOTED.