As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REAR BAY OVERHEAT ANNUNCIATOR ILLUMINATED IN FLIGHT SHORTLY AFTER TAKEOFF AT ABOUT 15000 FT ALTITUDE. LIGHT CAME ON TWICE FOR .5 MINUTE TOTAL, THEN STAYED OFF. NO SECONDARY INDICATIONS. PREFORMED EMERGENCY LANDING. REMOVED AND REPLACED THE REAR BAY OVERHEAT SWITCH. COMPLIED WITH A FUNCTIONAL TEST FOR THE REAR BAY OVERHEAT SWITCH WITH NO DISCREPANCIES NOTED. ALL WORK DONE PER AMM 26-10-41