As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE R2 WINDOW OVERHEAT LIGHT ILLUMINATED, RESET PER QRH AND THE OVERHEAT LIGHT ILLUMINATED AGAIN ON DESCENT THUR 5000'. GROUNDED-YES. REMOVED AND REPLACED R2 WINDOW, PER B737-900 MM 56-12-11. OPERATIONS CHECKED GOOD AND LEAK CHECK GOOD. CLEAR MEL NR 30-11E SEAMC MARK NOTIFIED PLACARD REMOVED.