SDR ASAA2016112818874

Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date: November 28, 2016
Submitted: November 30, 2016
Operation: Air carrier
Aircraft: N468AS
Make and model: Boeing 737990ER
Aircraft serial: 41735
Aircraft time: 9,658 hours, 3,190 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Warning Message
Condition: False Activation
Location: Window Heat
Stage of operation: NR
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 HEAT CAUTION LIGHT ILLUMINATED, RESET SWITCH IAW QRH, CAUTION LIGHT ILLUMINATED AGAIN. ACFT GROUNDED. ACCOMPLISHED BITE CHECK OF RIGHT SIDE WHCU. BIT TEST OK. ACCOMPLISHED WINDOW HEAT SYSTEM OPERATIONAL TEST, TEST PASSES FOR RIGHT SIDE WINDOW, IAW AMM 30-41-00/501. LAST FAULT LOGGED WAS WINDOW HEAT SENSOR. CHECK OF FLEX CORD OK, WINDOW SENSOR TERMINALS SECURE.