Service difficulty report · Window · Boeing 737890

Difficulty date
November 20, 2017
Submitted
November 22, 2017
Operation
Air carrier
Aircraft
N516AS
Make and model
Boeing 737890
Aircraft serial
39044
Aircraft time
34,039 hours, 10,387 cycles
Part
Window
Part number
5893543150
Part serial
12100H3850
Condition
Failed
Location
R1
Part time
15,033 hours, 4,471 cycles
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

RIGHT FWD WINDSHIELD OVERHEAT LIGHT IS ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED WINDOW HEAT CONTROL UNIT BITE PROCEDURE ON THE RIGHT FWD CONTROLLER. FOUND WINDOW SENSOR FAULT LIGHT ILLUMINATED, IAW FIM 30-41 TASK 801. MEASURED THE RESISTANCE OF THE WINDOW TEMP. SENSORS OF THE RIGHT FROM WINDOW, BOTH SENSORS SHOW OPEN CIRCUIT IAW AMM 30-41-21. REMOVED AND REPLACED R1 COCKPIT WINDOW IAW AMM 56-11-11-400-801 TO SECTION H-12. COMPLETED AMM 56-11-11-400-801. COMPLIED WITH WINDOW HEAT SYSTEM OPERATIONAL TEST. NO DEFECTS NOTED. GROUND VERIFICATION SATISFACTORY.