# SDR ASAA2022022337541

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2022
- Submitted: February 25, 2022
- Operation: Air carrier
- Aircraft: [N442AS](https://openairdocs.org/aircraft/N442AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43293
- Aircraft time: 30,751 hours, 9,795 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: V
- Nature of condition: M
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022022337541

## Discrepancy

L2 WINDOW HEAT OVERHEAT LIGHT ILLUMINATED IN FLIGHT. RAN QRH PROCEDURE AND LIGHT EXTINGUISHED. GROUNDED - YES. PERFORMED WHCU BITE PROCEDURE REF B737-900 FIM 30-41 TASK 801, NO CURRENT FAULT LOGGED, FOUND HISTORY FAULT FOR WINDOW SENSOR. WINDOW HEAT SYSTEM WORKING NORMAL AT THIS TIME.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.