As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FLT 540 - SHORTLY AFTER LIFT OFF, THE NR 1 ENGINE OVERTEMP LIGHT ILLUMINATED. CREW PERFORMED PROCEDURES FOR ENGINE OVERTEMP AND ELECTED TO RETURN TO FIELD AT PIT WHERE THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED AND NO ENGINE SHUT DOWN OCCURRED. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE ASSEMBLY PER JOB CARD. OPERATIONAL CHECK AND LEAK CHECK GOOD. (X)