As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR FILTER BOX WAS REMOVED TO DETERMINE IF MOONEY SB M20-250A NEEDED TO BE DONE. THE AIR FILTER BOX GASKET WAS MISSING ON BOTH SIDES; THE TOP AND BOTTOM WAS STILL THERE. AD 95-3-2 DOES NOT APPLY TO THIS AIR FILTER. THERE IS NO LOG BOOK ENTRY OR 337 FOR THIS INSTALLATION.