Service difficulty report · Wire · Boeing 737990ER

Difficulty date
November 20, 2017
Submitted
November 27, 2017
Operation
Air carrier
Aircraft
N495AS
Make and model
Boeing 737990ER
Aircraft serial
41728
Aircraft time
7,081 hours, 2,372 cycles
Part
Wire
Part number
ABC57021
Condition
Faulted
Location
Window Heat
Stage of operation
NR
How discovered
9
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 LIGHT ILLUMINATED. ACFT GROUNDED. PERFORMED WHCU BITE IAW FIM 30-41 TASK 801, FOUND WINDOW SENSOR FAULTS ON PREVIOUS FLIGHT LEGS. PERFORMED FIM 30-41 TASK 811, SENSOR RESISTANCE READINGS IN LIMITS AND WINDOW FILM RESISTANCE READ 59.6 OHMS. MOVED TAP FROM TB5014-3 TO TB5014-1 IAW AMM 30-41-21-000-801. MOVED WINDOW TEMPERATURE SENSOR FROM PRIMARY TO SECONDARY SENSOR AND REPLACED SIDE WINDOW COIL HARNESS IAW WDM 30-41-11 P3 S2 AND AMM 30-41-21-760-801. OPERATIONAL TEST SATISFACTORY IAW AMM 30-41-00-710-801.