As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD DUE TO LT ENGINE COMPRESSOR STALL. COMPRESSOR SURGE WAS CAUSED BY A DELAMINATION OF THE FAN SPINNER CONE. KEVLAR AND FIBERGLASS FROM THE SPINNER ENTERED THE CORE, AND DAMAGED NUMEROUS FAN BLADES. PWA SERVICE BULLETIN PW4ENG 72-594 INTRODUCES A NEW STRENGTHENED CONE CONE THAT REDUCES THE PROBABILITY OF DELAMINATION. THIS CONE WAS PRE-SB 72-594.