As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTICED A LOSS OF FUEL PRESSURE EN ROUTE. ELECTED TO LAND AT NEAREST SUITABLE AIRPORT. FOUND THAT THE MIXTURE CABLE SUPPORT NUT HAD BACKED OFF AND ALLOWED THE CABLE TO PULL THE MIXTURE ARM TOWARDS LEAN, RESULTING IN PARTIAL LOSS OF POWER.