As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) AIRCRAFT RETURNED TO AIRSTRIP AFTER TAKEOFF FOR A FORCED LANDING. FUEL STAINS FOUND DOWN THE SIDE OF THE AIRCRAFT EMANATING FROMTHE DRAIN VALVE. INSPECTION OF THE VALVE COULD FIND NO DEFECTSAND THE VALVE WAS CLOSED. ENGINE DRAIN VALVE SUSPECT LEFT PARTIALLY OPEN ALLOWING FUEL LEAKAGE AND THEN CLOSED ON LANDING.