SDR ASAA2015122814511

Service difficulty report · Sensor · Boeing 737890

Difficulty date: December 28, 2015
Submitted: December 30, 2015
Operation: Air carrier
Aircraft: N568AS
Make and model: Boeing 737890
Aircraft serial: 35183
Aircraft time: 34,160 hours, 10,539 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Sensor
Condition: Failed
Location: Window Heat
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

LEFT SIDE WINDOW, L-2, OVERHEAT LIGHT ILLUMINATED IN CRUISE. RAN QRH, WINDOW RESET AND OPERATED NORMALLY. ON DECENT AT 10,000', LIGHT ILLUMINATED AGAIN. RAN QRH AFTER 5 MINIMUM COOLING, TURNED WINDOW HEAT BACK ON, OVERHEAT LIGHT ILLUMINATED FEW MINUTES LATER, SECURED WINDOW, SWITCH OFF. ACFT GROUNDED. ACCOMPLISHED FIM TASK 30-41-801, FAULT HISTORY SHOWED SENSOR FAILED. CURRENT VERIFICATION TEST SHOWS NO FAILS GVI OF WINDOW SENSOR & COIL CORD OK WINDOW HEAT GROUND VERIFICATION CHECK OK REF SAME.