As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE, LT WING OVERHEAT ANNUNCIATOR ILLUMINATED FOR APPROXIMATELY 90 SECONDS AND LIGHT WENT OUT, THE CREW RETURNED TO DEPARTURE. ATC DECLARED AN EMERGENCY AND AN UNEVENTFUL LANDING WAS MADE. LT BLEED AIR DUCTING WAS INSPECTED WITH NO DEFECTS FOUND. OHM CHECKED WIRING FOR CONTINUITY AND SHORTS FOR LT WING OVERHEAT SWITCHES ALL FUNCTIONAL CHECKS GOODS. RAN ENGINE WITH NO DEFECTS FOUND AT THIS TIME UNABLE TO DUPLICATE.