SDR ASAA2019031628637

Service difficulty report · Warning System · Boeing 737890

Difficulty date: March 16, 2019
Submitted: March 19, 2019
Operation: Air carrier
Aircraft: N531AS
Make and model: Boeing 737890
Aircraft serial: 35199
Aircraft time: 34,440 hours, 10,175 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Warning System
Condition: False Activation
Location: Cockpit
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

WHILE AT CRUISE AT 38,000, OUTSIDE AIR TEMP -49, LEFT SIDE (L2) WINDOW OVERHEAT, COMPLIED WITH QRH, LIGHT STAYED EXTINGUISHED. GROUNDED - YES. RESISTANCE CKS WINDOW TEMP SENSOR & HEAT FILM NORMAL REF AMM 30-41-21. WINDOW HEAT OPERATIONAL TEST NORMAL REF AMM 30-41-00.