Service difficulty report · Sensor · Boeing 737890

Difficulty date
November 11, 2014
Submitted
November 13, 2014
Operation
Air carrier
Aircraft
N568AS
Make and model
Boeing 737890
Aircraft serial
35183
Aircraft time
29,830 hours, 9,271 cycles
Part
Sensor
Part number
1019755
Condition
Failed
Location
Window Heat
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

RIGHT SIDE COCKPIT WINDOW OVERHEATED. AFTER SWITCH CYCLED, LIGHT REMAINED ON. WINDOW HOT TO TOUCH - TWICE AS HOT AS LT SIDE WINDOW. THIS OCCURRED IN CRUISE FLT WITH OAT OF -59C. ACFT GROUNDED. NO HISTORY-COULD NOT DUPLICATE PROBLEM. R2 WINDOW RESISTANCE IS 61.2 AND TAPPED CORRECTLY. CONTROLLER LOGGED 2 SENSOR FAULTS. FOUND 2 BAD CRIMPS ON WINDOW SENSOR. RE-TERMINATED WIRING AT R2 SENSOR AND SWAPPED TO SPARE SENSOR. R2 WINDOW HEAT OPS NORMAL REF 30-41-00, 20-30-11 WDM.