SDR ASAA2020123133801

Service difficulty report · Sensor · Boeing 737890

Difficulty date: December 31, 2020
Submitted: January 5, 2021
Operation: Air carrier
Aircraft: N537AS
Make and model: Boeing 737890
Aircraft serial: 35204
Aircraft time: 33,761 hours, 9,837 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Sensor
Condition: Inoperative
Location: Sliding Window
Part time: 33,770 hours, 9,839 cycles
Stage of operation: CR
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

RIGHT SIDE WINDOW OVERHEAT LIGHT REMAINS ILLUM AFTER 5 MINUTE COOL DOWN (AT 41,000 FEET) OAT 56C. GROUNDED-YES. PERFORMED B737-800 FIM 30-41 TASK 812, FOUND SENSOR FAULTS ON WHCU. R2 WINDOW ALREADY ON SPARE SENSOR. REMOVED AND INSTALLED NR 2 OPENABLE WINDOW, REF B737-800 AMM 56-12-11-400-801 & 56-12-11-820-801. LEAK CHECK GOOD. VERIFIED CORRECT WINDOW TAP FOR AN H16 R2 WINDOW, REF B737-800 WDM 30-41-11. PASSED WINDOW HEAT OPERATIONS TEST, REF AMM 30-41-00-710-801.