As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAIL COMP HIGH INDICATION SHORTLY AFTER TAKEOFF. PERFORMED RED BOX & QRH PROCEDURES. THE FLIGHT DECLARED AN EMER. LIGHT EXTINGUISHED AFTER 3 OR 4 MINUTES. THE FLIGHT RETURNED & LANDED WITHOUT FURTHER INCIDENT. FOUND BOOT DISLODGED & BLOWING AIR AT LT HEAT EXCHANGER, FWD INBD DUCT. SECURED BOOT & LEAK CHECKED IAW MM 21-00-00. LEAK CHECKED GOOD. THE ACFT WAS GNDED.