As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L2 WINDOW OVERHEAT ILLUMINATED ON SHORT FINAL APPROACH. GROUNDED - YES. RMVD AND INSTALLED NEW LEFT SIDE WHCU M372. RMVD TAGS/CLOSED 2CBS. REF B737-900 AMM TASK 30-41-11-000-801. PERFORMED WHCU OPS TEST REF AMM 30-41-11/501. SYS CKS NML.