# SDR AALA202008039011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2020
- Submitted: August 3, 2020
- Operation: Air carrier
- Aircraft: [N854NN](https://openairdocs.org/aircraft/N854NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33214
- Aircraft time: 30,745 hours, 12,522 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Control Unit
- Condition: Inoperative
- Location: L1 Window Heat
- Stage of operation: CR
- How discovered: O
- Nature of condition: M
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202008039011

## Discrepancy

AIRCRAFT WAS GROUNDED: L-1 FLIGHT DECK WINDSHIELD CRACKED OCCURRED AT 39000 WITH NO OVERHEAT INDICATION. OVERHEAT LIGHT CAME ON APPROXIMATELY 30 SECOND AFTER THE WINDSHIELD CRACKED. REMOVED AND REPLACED WINDOW HEAT CONTROL UNIT (AALA202008039011) FOR L1 WINDOW AND THE L1 WINDSHIELD (AALA202008019003).

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