# SDR ASAA2020013172021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2020
- Submitted: February 11, 2020
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 24,073 hours, 7,704 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Window
- Part number: 56100025
- Part serial: 12263H0536
- Condition: Faulted
- Location: Cockpit
- Part time: 27,294 hours, 8,690 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020013172021

## Discrepancy

LEFT SIDE WINDOW HEAT OVERHEAT CAME ON DURING CRUISE FAULT CODE 304 010 41. GROUNDED - YES. VISUAL INSPECTION OF PRIMARY AND SPARE SENSOR SHOWS DELAM. VERIFIED LH SIDE WINDOW RESISTANCE IAW B737-900 AMM 30-41-21. RESISTANCE READS 67.7 OHMS. MOVED WINDOW HEAT POWER LEAD W0420-1001-20 TO TERMINAL #2 ON TB5016 IAW AMM 56-12-11. REMOVED AND REPLACED LH SIDE WINDOW REF AMM 56-12-11. OPS AND LEAK CHECK GOOD.

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