Service difficulty report · Sensor · Boeing 737990ER

Difficulty date
August 13, 2016
Submitted
August 17, 2016
Operation
Air carrier
Aircraft
N431AS
Make and model
Boeing 737990ER
Aircraft serial
43255
Aircraft time
11,209 hours, 3,660 cycles
Part
Sensor
Condition
Failed
Location
L2 Window
Stage of operation
LD
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 ILLUMINATED ON LANDING. TURNED SWITCH OFF, WAITED 10 MINUTES, SWITCH ON AND LIGHT ILLUMINATED. ACFT GROUNDED. RESISTANCE CHECKED AT L2 WINDOW SHOWS OPEN FOR PRIMARY SENSOR. MOVED TERMINAL TO SPARE SENSOR, RESISTANCE CHECKED GOOD. WINDOW HEAT OPS TEST PASSED IAW AMM 30-41-21 & 30-41-00.