Service difficulty report · Sliding Window · Boeing 737990ER

Difficulty date
December 30, 2017
Submitted
January 8, 2018
Operation
Air carrier
Aircraft
N477AS
Make and model
Boeing 737990ER
Aircraft serial
40716
Aircraft time
10,236 hours, 3,329 cycles
Part
Sliding Window
Part number
56100025
Part serial
15104H9126
Condition
Failed
Location
Cockpit
Part time
10,297 hours, 3,352 cycles
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

ON APPROACH, THE LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. QRH PROCEDURE ACCOMPLISHED. OVERHEAT LIGHT REMAINED ON WITH WINDOW HEAT ON AFTER COOLDOWN TIME. WINDOW HEAT SELECTED OFF. PERFORMED RESISTANCE CHECK OF WINDOW HEAT FILM FOR LT SIDE WINDOW AND FOUND RESISTANCE OUT OF TOLERANCE IAW AMM 30-41-21-000-801 AND WDM 30-41-12. MEL 30-11E. . REMOVED AND REPLACED THE L2 WINDOW IAW AMM 56-12-11-400-801. OPS AND LEAK CHECKED GOOD. ACFT GROUNDED.