# SDR IPXA2023120481904

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2023
- Submitted: December 4, 2023
- 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
- Aircraft time: 58,447 hours, 9,562 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Detector
- Part number: 285N002821
- Part serial: D18108
- Condition: False Activation
- Location: Unknown
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2023120481904

## Discrepancy

*** ATB *** IMMEDIATELY AFTER TAKEOFF €Œ DET FIRE/OHT 4€? ANNUNCIATION ON EICAS. CHECKLIST ACTIONED. FUEL JETTISON CHECKLIST ACTIONED. 26,000 LB DUMPED REMOVED AND REPLACED AFOLTS CARD #4 ENGINE CARD A18 IAW AMM 26-10-01.  FIRE TEST OK IAW AMM 26-10-01.  INSPECTED #4 ENGINE LOOP DETECTORS AND CONNECTIONS.  NO DEFECTS NOTED.

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