What was found
AIR RETURN FOR WING OVERHEAT MASTER WARNING IN STBY MODE (RIGHT WING). RETURNED TO DTW. REMOVED AND REPLACED RT WING BACKUP OVHT THERMAL SWITCH. SYSTEM OPS CHECK GOOD IAW AMM 30-12-16. A/C OK FOR SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR RETURN FOR WING OVERHEAT MASTER WARNING IN STBY MODE (RIGHT WING). RETURNED TO DTW. REMOVED AND REPLACED RT WING BACKUP OVHT THERMAL SWITCH. SYSTEM OPS CHECK GOOD IAW AMM 30-12-16. A/C OK FOR SERVICE.