# SDR ASAA2017031120119

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2017
- Submitted: March 23, 2017
- Operation: Air carrier
- Aircraft: [N533AS](https://openairdocs.org/aircraft/N533AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35201
- Aircraft time: 24,056 hours, 7,034 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Window
- Part number: 56100023
- Part serial: 10275H3249
- Condition: Failed
- Location: Cockpit L2
- Part time: 24,185 hours, 7,073 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/ASAA2017031120119

## Discrepancy

LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED IN CRUISE FLIGHT.  LIGHT EXTINGUISHED AFTER TURNING OFF THE WINDOW HEAT FOR 5 MINUTES.  LIGHT CAME ON AGAIN AT 4 HOURS 30 MINUTES INTO FLIGHT EXTINGUISHED AGAIN AFTER TURNING WINDOW HEAT OFF FOR 5 MINUTES.  ACFT GROUNDED.  PERFORMED B737-800 FIM 30-41 TASK 811. FOUND THAT BOTH PRIMARY AND SPARE SENSORS ARE OPEN, REF B737-800 WDM 30-41-12. ACCOMPLISHED AMM 56-12-11-400-801, STEPS 3.F.(6) & (7) K). REPLACED THE L2 SLIDING WINDOW. OPS TESTED GOOD IAW AMM 56-12-11.

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