As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE SERVICING THE FUEL BOWL FILTER SEGMENTS, THE THREADED POST WHICH RETAINS AND SECURES THE FILTERS AND BOWL TO THE ASSY BODY WAS FOUND LOOSE AND HELD IN BY ONLY ONE THREAD (1 FULL TURN). POST AND BODY HAVE APPROXIMATELY 8 THREADS. SUSPECT CAUSE WAS THAT POST MAY NOT HAVE BEEN FULLY THREADED OR SECURED INTO ASSY BODY.