# SDR UIEA2015101800582

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2015
- Submitted: October 19, 2015
- Operation: Air carrier
- Aircraft: [N493MC](https://openairdocs.org/aircraft/N493MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29254
- Aircraft time: 70,119 hours, 11,149 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Logic Card
- Part number: 285U0089214
- Part serial: D00247
- Condition: Defective
- Location: Warning System
- Part time: 26,279 hours, 4,139 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2015101800582

## Discrepancy

MASTER WARNING & BELL WITH NO EICAS MSG.  REPLACED MASTER MONITOR CARD B IAW AMM 31-51-02.

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