# SDR UIEA2014102700507

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 26, 2014
- Submitted: October 27, 2014
- Operation: Air carrier
- Aircraft: [N492MC](https://openairdocs.org/aircraft/N492MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29253
- Aircraft time: 69,171 hours, 12,024 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Relay
- Part number: KD4L036
- Condition: Failed
- Location: Fire Warning
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2014102700507

## Discrepancy

REFERENCE LOG PAGE 586518 ITEM 1.  LOWER AFT CARGO FIRE WARNING LIGHT ON AFTER TOC FOR APPROXIMATELY 5 MINUTES.  REPLACED RELAY R7453 IN P415 PANEL IAW SWPM 20-81-22.  TEST PASSED IAW AMM 26-16-00 501.

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