As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT EXPERIENCED LOSS OF FUEL FLOW CAUSING ENGINE FUEL STARVATION. AFTER INSP, IT WAS FOUND THAT THE GASCOLATOR BOWL DRAIN VALVE WAS MISSING. PROBABLE CAUSE: POSSIBLE LACK OF CHEMICAL LOCKING AGENT ON VALVE THREADS CAUSING VALVE TO LOOSEN DUE TO USAGE. RECOMMEND INSP OF DRAIN VALVE FOR SECURITY IAW SB NR 1037. NOTE: THIS ACFT SN IS NOT AFFECTED BY SB 1037, BUT COMPLIANCE COULD HAVE POSSIBLY PREVENTED THE MALFUNCTION.