Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
March 14, 2019
Submitted
March 19, 2019
Operation
Air carrier
Aircraft
N431AS
Make and model
Boeing 737990ER
Aircraft serial
43255
Aircraft time
21,483 hours, 7,059 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
AP
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 FWD WINDOW HEAT OVERHEAT CAUTION LIGHT ILLUMINATED ON FINAL APPROACH. PERFORMED QRH AND LIGHT REMAINED ILLUMINATED. GROUNDED - YES. PERF WINDOW WHCU BITE PER FIM 30-41 TASK 801 WINDOW HEAT RESET. OPS CK GOOD.