# SDR UIEA2026071300593

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2026
- Submitted: July 13, 2026
- Operation: Air carrier
- Aircraft: [N450PA](https://openairdocs.org/aircraft/N450PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30808
- Aircraft time: 104,718 hours
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Circuit Card
- Condition: Faulted
- Location: Zone 100
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026071300593

## Discrepancy

MAIN DECK FIRE WARNING - NO EICAS MSG.   SWAPED THE A4 WITH A29 CIRCURT CARD & PFMD GND TEST ,TEST PASSED IAW AMM 26-10-01 (NOW D00132 IN A4 POSITION,D00883 IN A29 POSITION)

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