Service difficulty report · Control Unit · Boeing 767306

Difficulty date
July 23, 2018
Submitted
July 24, 2018
Operation
Air carrier
Aircraft
N1409A
Make and model
Boeing 767306
Aircraft serial
27960
Aircraft time
88,517 hours, 16,509 cycles
Part
Control Unit
Part number
6240665
Part serial
080C1805
Condition
Faulty
Location
Cockpit
Stage of operation
IN
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

RIGHT FWD WINDOW HEAT MESSAGE DISPLAY. FOUND WIRING TO BE ROUTED INCORRECTLY AROUND R1 WINDOW, PERFORMED CHECK OF WIRE ROUTING ALL THE WAY RT WINDOW WINDOW HEAT CONTROL UNIT IAW WPM 30-41-12. FOUND LOOSE AND CONTAMINATED CONNECTOR D4294P CLEANED AND RE-SECURED IAW SWPM 20-60-02. PERFORMED TORQUE OF SENSOR BOLTS PER MCC REQUEST REF AMM 51-11-01 BOLTS WERE CORRECTLY INSTALLED AND TORQUED. FOUND POWER DELIVERY FROM WINDOW HEAT CONTROL UNIT TO THE R1 WINDOW HEAT SENSOR TO BE UNDER SPEC FROM D2898A PINS 19 AND 20 TO D1912 CONTACTS. REMOVED AND REPLACED WINDOW HEAT CONTROL UNIT IAW AMM 30-41-01. OPS CHECK GOOD. VOLTAGE CHECK AND RESISTANCE. CHECKS GOOD PER FIM 30-41 F/T 802 NO FURTHER DEFECTS NOTED.