As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OTHER MAINTENANCE,THE DRAIN LINE FOR THE GRAVITY REFUEL PORT WAS FOUND CRACKED IN 4 PLACES. THIS COULD ALLOW FUEL TO LEAK INTO THE TAILCONE/BAGGAGE AREA. DEBRIS WAS FOUND NEAR OUTLET. LINE WAS REPLACED AND A LOW SPOT WAS ELIMINATED. THE GRAVITY FUEL CAP IS ALSO A RELIEF VALVE IN CASE OF FUEL EXPANSION. THE EXPANDED FUEL WOULD DRAIN INTO THE AFFECTED DRAIN TUBE.