As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUST AFTER TAKEOFF ROTATION, NR 3 FIRE BELL/WARNING ALERTED. ENGINE SHUT DOWN. LIGHT WENT OUT AND BELL SILENCED. RETURNED TO BUFFALO. *S/D* 8TH STAGE PNEUMATIC EXTENSION DUCT BETWEEN SADDLE DUCT AND STUB WING LEAKING. REPLACED DUCT AND NO LEAKS WERE NOTED.