Service difficulty report · Control Unit · Boeing 737890

Difficulty date
December 26, 2012
Submitted
December 28, 2012
Operation
Air carrier
Aircraft
N577AS
Make and model
Boeing 737890
Aircraft serial
35186
Aircraft time
22,109 hours, 6,682 cycles
Part
Control Unit
Part number
8300005604
Part serial
8834D
Condition
Malfunctioned
Location
Window Heat
Part time
22,109 hours, 6,682 cycles
Stage of operation
CL
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

ON CLIMBOUT PASSING 26000 FT, RT SIDE WINDOW OVERHEAT LIGHT CAME ON. FOLLOWED QRH, RETURNED TO NORMAL OPS. REMOVED & REINSTALLED R2 WINDOW. SEALS GOOD. HISTORY SHOWS SENSOR FAULT. SENSOR OHMS GOOD & TERMINALS ARE TIGHT, REF MM 30-41-21. REPLACED R2 WINDSHIELD HEAT CONTROL UNIT AS A PRECAUTION. OPS CHECKED GOOD, REF MM 30-41-11. OPS CHECK R2 WINDOW HEAT GOOD. REF MM 30-41-00. ALSO REF FIM 30-41/T801.