Service difficulty report · Sensor · Boeing 737890

Difficulty date
July 27, 2018
Submitted
July 31, 2018
Operation
Air carrier
Aircraft
N529AS
Make and model
Boeing 737890
Aircraft serial
35198
Aircraft time
32,485 hours, 9,781 cycles
Part
Sensor
Part number
5893543149
Part serial
12326H7772
Condition
Failed
Location
Cockpit
Part time
19,868 hours, 5,929 cycles
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

OVERHEAT LIGHT ON LEFT FORWARD WINDSHIELD. GROUNDED - YES. BITE CHECKED LT FWD WHCU REF FIM 30-41 TASK 801. FAULTS SENSOR. SWAPPED TO SPARE SENSOR USING S1078, STILL FAILS WINDOW SENSOR REF WDM 30-41-11. REMOVED L1 WINDOW REF AMM 56-11-11-000-801. PERFORMED LEAK TEST AND BONDING CHECK, BOTH TEST GOOD.