As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
T/R LIGHT CAME ON IN-FLIGHT. SWITCHES OUT OF ADJUSTMENT GIVING AN INDICATION LIGHT TO COCKPIT. T/R WAS STOWED. SWITCHES 36K AND 37K WERE ADJUSTED PER MM AND SYSTEM F/T OKAY. SUSPECT CAUSE: SWITCHES IN A HIGH HEAT AREA AND OVER TIME CAN GO OUT OF ADJUSTMENT.