# SDR ASAA2018061194997

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 9, 2018
- Submitted: June 11, 2018
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 15,753 hours, 5,246 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Heating Element
- Condition: Malfunctioned
- Location: Windshield
- Part time: 15,753 hours, 5,246 cycles
- Stage of operation: TX
- 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/ASAA2018061194997

## Discrepancy

AT THE GATE,  THE LEFT FWD WINDOW OVERHEAT LIGHT ILLUMINATED.  FOLLOW QRH CHECKLIST AND LIGHT REILLUMINATED AFTER WAITING 3 MINUTES.  ACFT GROUNDED.  FRONT LEFT WINDOW HEAT CONTROLLER SHOWS SENSOR FAULT. SELECTED SENSOR SWITCH TO SPARE ALSO SHOWS SENSOR FAULT.  TRIED WHCU NO HELP, IAW AMM 40-41-11. RANG SENSORS FROM LT WHCU D1044A PIN 13 T 26. RING BAD,  OPEN, IAW FIM 30-41 TASK 812.  REMOVED THE L1 WINDOW IAW AMM 56-11-11. MOVED L1 WINDOW WIRE TAP (1002-18) FROM TERMINAL1 TO TERMINAL 2 OF TB5010 IAW WDM 30-41-11 AND AMM 56-11-11 STEP H1. LEAK CHECKED AND OPS CHECKS GOOD.

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