As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C156-2 WINTER BOOTS (FEATHER BEARINGS ON THE BLADES) DEVELOPED FRACTURES IN THE SILICONE WHERE STRESSES FROM STRETCHING AND DEFORMATION WAS CONCENTRATED. IT WAS NOT A CUT, AND APPEARED TO BE GRANULAR OR ALMOST LIKE FLOWLINES FROM MOLDING.