SDR ASAA2019071530082

Service difficulty report · Terminal · Boeing 737990ER

Difficulty date: July 15, 2019
Submitted: July 18, 2019
Operation: Air carrier
Aircraft: N493AS
Make and model: Boeing 737990ER
Aircraft serial: 41727
Aircraft time: 12,825 hours, 4,252 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Terminal
Condition: Unsecure
Location: Window Heat
Stage of operation: NR
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

LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED AT 10,500 FEET. GROUNDED - YES. PERFORMED LEFT SIDE WINDOW HEAT SYSTEM OPERATIONAL TEST REF AMM 30-41-00. CHK GOOD. WINDOW HEAT CONTROLLER BITE SHOWS SENSOR FAULTS IN HISTORY. PERFORMED SENSOR FAULT FIM 30-41 TASK 811. WINDOW RESISTANCE WITHIN LIMITS. SHAKE DOWN OF WINDOW COIL CORD AND WIRING TO SENSOR AND HEATER GOOD. DID FIND SECONDARY TERMINAL NOT FULLY SECURED. SECURED SAME, OPS NML REF AMM 30-41-00.