As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCIDENT INVESTIGATION ALLEGATIONS WERE MADE THAT THE AMO SIGNED A MX RELEASE FOR WORK ON AN ACFT THAT HAD UNAPPROVED PARTS. DURING THE AMO`S INVESTIGATION IT BECAME APPARENT THAT MOST FLOAT EQUIPPED ACFT HAVE FLOAT BALLS THAT ARE UNAPPROVED. A LETTER HAS BEEN WRITTEN IDENTIFYING THE SERIOUS NATURE OF THE UNAPPROVED BALLS.