As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT WAS LEAVING DEPARTURE AIRPORT THE 2ND TIME WHEN THE CREW NOTICED A 1000 LB LOSS OF FUEL. CREW RETURN TO BASE WITHOUT ANY INCIDENT AND MAINTENANCE DID FUNCTIONAL CHECKS AND LEAK CHECKS AND FOUND NOTHING TO REPORT. ACFT WAS RELEASED TO SERVICE.