As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF, NR 2 ENGINE WOULD NOT EXCEED 830 DEG TIT, SELECTED NULL AND PULLED IGNITION CONTROL CB ENGINE TIT STAYED AT 830 DEG. TIT, SHUTDOWN ENGINE AT 1226Z. RETURNED TO DEPARTURE AIRPORT. REMOVED AND REPLACED NR 2 SPEEDSENSE CONTROL IAW ALLISON 501 D22 MM CH 73-500 P201 OPS CK NORMAL.