As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LARGE PARTICLES OF SLOSHING TYPE FUEL TANK SEALANT WERE FOUND ON THE FUEL TANK FINGER SCREEN DURING A POST-ACCIDENT INSPECTION. THE SUBJECT ACFT HAD AN AUTOFUEL STC WHICH MAY NOT HAVE BEEN COMPATIBLE WITH THE SEALANT WHICH WAS APPLIED IN 1957. (X)