Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
December 29, 2017
Submitted
January 2, 2018
Operation
Air carrier
Aircraft
N477AS
Make and model
Boeing 737990ER
Aircraft serial
40716
Aircraft time
10,236 hours, 3,329 cycles
Part
Warning Light
Condition
False Activation
Location
Window Heat
Stage of operation
DE
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 HEAT LIGHT ILLUMINATED DURING DESCENT. QRH FOLLOWED. LIGHT ILLUMINATED AGAIN. SWITCHED OFF. ACFT GROUNDED. UNABLE TO DUPLICATE FAULT. LT SIDE WINDOW HEAT OPS CHECKED GOOD IAW FIM 30-41 TASK 814. NO HISTORY 30 DAYS.