Service difficulty report · Wire · Boeing 737990ER

Difficulty date
January 8, 2017
Submitted
January 12, 2017
Operation
Air carrier
Aircraft
N464AS
Make and model
Boeing 737990ER
Aircraft serial
40714
Aircraft time
10,701 hours, 3,476 cycles
Part
Wire
Part number
56100025
Condition
Damaged
Location
L2 Window
Stage of operation
DE
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

LEFT SIDE WINDOW OVERHEAT LIGHT CAME ON AFTER RUNNING QRH. LANDED BEFORE 25 MINUTES EXPIRED. ACFT GROUNDED. ACCOMPLISHED WINDOW HEAT SYSTEM, OPERATIONAL TEST IAW AMM 30-41-00-710-801. LEFT SIDE WINDOW SWITCH MOVED TO ON, ON LIGHT WOULD NOT ILLUMINATE AFTER 30 SECONDS. RESET SWITCH, OPERATED INTERMITTENTLY, OVERHEAT LIGHT ILLUMINATED. ACCOMPLISHED BITE OF WHCU M322 LEFT SIDE IAW FIM 30-41 TASK 801, WINDOW SENSOR FAULT ILLUMINATED. IAW FIM 30-41 TASK 811, PRIMARY SENSOR TERMINAL FOUND WITH HIGH RESISTANCE. RELOCATED WIRE FROM PRIMARY SENSOR D TERMINAL TO SPARE SENSOR D TERMINAL.