As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GP NOZZLE WAS INSTALLED ON ENGINE THAT WAS SURGING. DURING INVESTIGATION, FOUND THE NEWLY OVERHAULED GP NOZZLE TO HAVE BURNED VANES. THERE ARE OTHER NOZZLES WITH SIMILAR DEFECTS NOTED ON OTHER INSTANCES. INVESTIGATION OF THIS MATTER IS ONGOING.