# SDR WRLA20100305345

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2010
- Submitted: March 5, 2010
- Operation: Air carrier
- Aircraft: N741WA
- Make and model: Boeing 747-4H6
- Registry model: [Boeing 747-4H6](https://openairdocs.org/model/boeing-747-4h6) (OpenAirDocs)
- Aircraft serial: 25702
- Aircraft time: 69,148 hours, 8,979 cycles
- Engine: Pwa PW4056
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Anti-Ice System
- Condition: Defective
- Location: Cockpit Window
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WRLA20100305345

## Discrepancy

SMOKE IN COCKPIT FROM 3R WINDOW.  DE-SELECTED WINDOW HEAT R SWITCH - SMOKE DISSIPATED.  ISSUED MEL FOR 3R WINDOW HEAT PER MEL 30-41-03-01, DMI M30MR0510-165, CAT C DUE MARCH 15, 2010.  MEL PROCEDURE C/W.  MTC CNTL ADVISED DUE SMOKE DETECTED IN COCKPIT.

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