# SDR IPXA2013111100789

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 2013
- Submitted: November 11, 2013
- Operation: Air carrier
- Aircraft: [N570UP](https://openairdocs.org/aircraft/N570UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35667
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Condition: Dirty
- Location: Nr 4 Nacelle
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2013111100789

## Discrepancy

NR 4 ENG LP "B" ENG FIRE DETECTOR SYS ILLUMINATED .  CLEANED FWD LWR FIRE LOOP RESPONDER OF CARBON BUILD-UP, OPS CHECKED GOOD IAW AMM 26-11-00.

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