Service difficulty report · Circuit Breaker · Boeing 737890

Difficulty date
December 8, 2009
Submitted
December 11, 2009
Operation
Air carrier
Aircraft
N518AS
Make and model
Boeing 737890
Aircraft serial
35693
Aircraft time
3,126 hours, 932 cycles
Part
Circuit Breaker
Condition
Tripped
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

WINDOW R2 OVERHEAT LIGHT CAME ON DURING FLIGHT AND STAYED ON AFTER 5 MIN OF COOLING. SWITCH LEFT OFF. T/S PER FIM 30 41 TASK 801. WHCU SHOWED "BUS PWR" FAULT. FOUND RT SIDE WINDOW HEAT PWR C/B OUT. CHECKED, NO HISTORY. RESET C/B REF MM 20 60 01. C/B RESET OK. OPS CHECK R2 WINDOW HEAT GOOD. GND VERIFICATION OF R2 WINDOW HEAT GOOD. REF FIM 30 41TASK 806 & MM 30 41 00/501.