# SDR UIEA2026082200785

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 22, 2026
- Submitted: August 25, 2026
- Operation: Air carrier
- Aircraft: [N473MC](https://openairdocs.org/aircraft/N473MC), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 27174
- Aircraft time: 124,060 hours, 22,420 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Warning
- Condition: False Activation
- Location: Zone
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026082200785

## Discrepancy

FALSE FIRE WARING AFT LOWER.  NOTED BY MX. PERFORMED FIRE DETECTION SYSTEM TEST IAW AMM 26-16-00, TEST PASSED. NO FURTHER MX REQ.

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