# SDR SIMA20260727001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2026
- Submitted: July 28, 2026
- Operation: Air carrier
- Aircraft: [N291NN](https://openairdocs.org/aircraft/N291NN), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000842
- Aircraft time: 16,732 hours, 11,372 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Mau
- Condition: Failed
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20260727001

## Discrepancy

AVNX MAU 1B FAIL IN FLIGHT. ASSOCIATED MESSAGES SPOILER FAULT AND SPDBRK FAIL. EMERGENCY DECLARED. PERFORM POWER DOWN POWER UP RESET PER QRH 7.2.1 AND 7.2.2. MESSAGE EXTINGUISH A/C OK FOR SERVICE. AND PERFORM QRH 7.3.22 AND AMM 27-00-00. OPS CHECK GOOD

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