As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) RT ENGINE NR 9 CYLINDER INDUCTION MANIFOLD SEPARATED FROM CYLINDER AND WAS FOUND LAYING IN THE LOWER COWL FLAP AREA. INVESTIGATION FOUND THE MANIFOLD ATTACHMENT NUT HAD BACKED OFF ALLOWING THE MANIFOLD TO PULL OUT OF THE CYLINDER AND REAR CASE. (CASA NR 510001511)