As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN FOR RT TAILPIPE HOT ON CLIMB-OUT FROM LGA. EMERGENCY DECLARED, LIGHT WENT OUT ON IT'S OWN SHORTLY AFTER. WEATHER ON THE GROUND WAS HEAVY RAIN PRIOR TO DEPARTURE. CW WORKCARD FOR TAILPIPE SENSOR SEALING. ONCE DONE, OPS CHECKED GOOD.