# SDR UIEA2014102700506

- 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: Switch
- Condition: Dirty
- Location: Fire Warning
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2014102700506

## Discrepancy

LOWER AFT CARGO FIRE WARNING LIGHT RANDOMLY COMES ON & OFF.  NO OTHER LOWER AFT CARGO FIRE WARNINGS OR INDICATIONS.  TROUBLE SHOT & FOUND LOWER AFT CARGO FIRE WARNING SWITCH DUST.  CLEANED & RECONNECTED THEN AFT CARGO FIRE SYS CHECKED OK IAW AMM 26-23-00.

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