Service difficulty report · Sensor · Boeing 737890

Difficulty date
December 1, 2008
Submitted
December 3, 2008
Operation
Air carrier
Aircraft
N583AS
Make and model
Boeing 737890
Aircraft serial
35681
Aircraft time
5,529 hours, 1,682 cycles
Part
Sensor
Condition
Failed
Location
Cockpit Window
Part time
5,529 hours, 1,682 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

RIGHT SIDE WINDOW OVERHEAT CONDITION 10 MIN AFTER TAKEOFF TURNED HEAT OFF FOR 5 MINUTES PER QRH UPON TURNING HEAT ON THE OVERHEAT LAMP ILLUMINATED IMMEDIATELY. TURNED HEAT OFF FOR REMAINDER OF FLIGHT. RT SIDE WHCU FAULTS SENSOR. W/RT SIDE WINDOW HEATED FOUND PRIMARY SENSOR AT 364 OHMS. SPARE AT 352 OHMS. MAX IS 330 OHMS PER MM 30-41-21-760-801 TABLE 502. CHECK OF HEAT FILM RESISTANCE GOOD PER MM 30-41-21-000-801. VERIFIED WINDOW IS TAPPED PROPERLY REF WD 30-41-11 PG 3. REMOVED AND REPLACED R2 WINDOW.