# SDR ASAA2015072912633

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2015
- Submitted: July 31, 2015
- Operation: Air carrier
- Aircraft: [N478AS](https://openairdocs.org/aircraft/N478AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44105
- Aircraft time: 89 hours, 29 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Control Unit
- Part number: 8300005605
- Part serial: 24198
- Condition: Failed
- Location: Windshield Heat
- Part time: 82 hours, 26 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015072912633

## Discrepancy

F/O SLIDING WINDOW HEAT INOPERATIVE.  ACFT GROUNDED.  RT SIDE WHCU BITE SHOWS WHCU FAULTS 7 OF 10 LEGS.  REPLACED IAW MM 30-41-011, OPS NORMAL.

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