SDR ASAA2023052643374

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: May 26, 2023
Submitted: May 30, 2023
Operation: Air carrier
Aircraft: N448AS
Make and model: Boeing 737990ER
Aircraft serial: 36356
Aircraft time: 25,490 hours, 7,962 cycles
System (JASC): 3040 · Windshield/Door Rain/Ice Removal
Part: Unknown
Condition: Unknown
Location: Unknown
Stage of operation: NR
How discovered: V
Nature of condition: M
Precautionary procedure: K

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

What was found

RIGHT SIDE WINDOW HEAT, OVERHEAT CAUTION. GROUNDED - YES. RIGHT SIDE WINDOW, PRIMARY TEMP SENSOR HAS OPEN CIRCUIT. SWAPPED FROM PRIMARY TO SECONDARY WINDOW HEAT SENSOR, OPS CHECKS OK. REF B737-900 FIM 30-41 TASK 801 & 811, B737-900 AMM 30-41-21 & 30-41-00.