# SDR IPXA1B65770

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2011
- Submitted: March 28, 2011
- Operation: Air carrier
- Aircraft: [N572UP](https://openairdocs.org/aircraft/N572UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35669
- Engine: Ge CF680C2B1F
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: TS681682683
- Condition: Inoperative
- Location: Nr 3 Engine
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA1B65770

## Discrepancy

EICAS MSG DET FIRE/OHT 3.  REPLACED UPPER AFT LOOP ASSY (TS681), LOWER AFT LOOP ASSY (TS682) AND LOWER FWD LOOP ASSY (TS683) REF AMM 26-11-02-4.  OPS CHECK GOOD.

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