SDR ASAA2015033011177

Service difficulty report · Sensor · Boeing 737890

Difficulty date: March 30, 2015
Submitted: April 1, 2015
Operation: Air carrier
Aircraft: N537AS
Make and model: Boeing 737890
Aircraft serial: 35204
Aircraft time: 12,627 hours, 3,775 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Sensor
Part number: BCREFD00400
Condition: Failed
Location: L2 Window
Stage of operation: NR
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 HEAT OVERHEAT LIGHT ILLUMINATED. FOLLOWED QRH. OVERHEAT LIGHT ILLUMINATED AGAIN. ACFT GROUNDED. WHCU FOR LT SIDE FAULTED WINDOW SENSOR SEVERAL TIMES, RANG BOTH SENSORS USED SENSOR 4+K OHMS, SPARE RANG 300 OHMS REF WDM 30-41-12. SWAPPED TO GOOD SENSOR IAW FIM 30-41, TASK 811. OPS CKD LT SIDE WINDOW AMM 30-41-00, ALL GROUND TESTS PASSED.