Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
March 2, 2020
Submitted
March 4, 2020
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
18,735 hours, 5,993 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LEFT SIDE WINDOW OVERHEAT LIGHT REMAINS ILLUMINATED. GROUNDED - YES. VERIFIED LEFT SIDE WINDOW OVERHEAT LIGHT EXTINGUISHED. PERFORMED LEFT SIDE WINDOW WHCU BITE IAW B737-800 FIM TASK 30-41 TASK 801. BITE TEST OK.