As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 10,000 FT THROTTLE AT NORMAL SETTING JUST ABOVE IDLE, LOUD NOISE WAS HEARD FROM NR 1 ENGINE. EGT WENT RED AND VIBRATION INDICATION STAYED AT 6.0. REPLACED NR 1 ENGINE. TEARDOWN REVELAED A STAGE THREE BLADE FAILED IN THE DOVE TAIL AREA. THIS PROBLEM IS NOT LIMITED TO ANY ONE PART NUMBER. OEM IS DEVELOPING A NEW DESIGN C3 BLADE FOR FLEET INCORPORATION.