As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS IMPELLER HAS EXPERIENCED WHAT LOOKS LIKE HIGH CYCLE FATIGUE WITH A VERY LOW TT ON THE UNIT. IT APPEARS TO HAVE FAILED DUE TO WHAT STARTED AS A FATIGUE CRACK AND RESULTED IN A LARGE PIECE OF THE IMPELLER COMING OFF. THIS IMPELLER AND ANOTHER WERE PURCHASED WITHIN 30 DAYS OF EACH OTHER AND HAVE SN THAT ARE 2 DIGITS OFF FROM THE OTHER. (K)