SDR ASAA0955195

Service difficulty report · Unknown · Boeing 737890

Difficulty date: April 20, 2009
Submitted: April 22, 2009
Operation: Air carrier
Aircraft: N579AS
Make and model: Boeing 737890
Aircraft serial: 35187
Aircraft time: 8,360 hours, 2,454 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Unknown
Condition: Malfunctioned
Location: Window Heat
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

APPROX 4.5 HOURS AIRBORNE GOT WINDOW HEAT "OVERHEAT" LIGHT ON "L" "SIDE" WINDOW. ACCOMP QRH PROCEDURE. WINDOW HEAT RE-ESTABLISHED ALL INDICATIONS NORMAL. BITE CHECKED WINDOW HEAT CONTROL UNIT, NO FAULT REF FIM 30 41 TASK 801. BITE HISTORY HAD TWO STORE FAULT FOR WINDOW SENSOR. AS A PRECAUTION RESISTANCE CHECKED ON SENSOR SHOWED NORMAL REF FIM 30 41 TASK 811. WINDOW HEAT OPS CHECKED NORMAL PER MM 30 41 00. NO HISTORY PAST 90 DAYS.