# SDR SIMA20260619001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2026
- Submitted: June 22, 2026
- Operation: Air carrier
- Aircraft: [N285NN](https://openairdocs.org/aircraft/N285NN), 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: 17000823
- Aircraft time: 16,312 hours, 11,229 cycles
- System (JASC): [3140 · Central Computers](https://openairdocs.org/jasc/3140)
- Part: Mau
- Part number: 70382311902
- Condition: Faulted
- Location: Nr 1a
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20260619001

## Discrepancy

AVNX MAU 1A FAIL IN FLIGHT. CHECK ADDITIONAL EICAS MSG'S (EMERGENCY DECLARED) PERFORMED SYS T/S AS PER EMB-175 FIM 31-41-00, RAR NIC 1 - PROC 1 MODULE IAW AMM 31-41-04, UPLOAD OP SOFTWARE IAW AMM 45-45-00, AND OPT IS GOOD IAW EMB-175 AMM 31-41-04. ALL MSGS CLEARED ALSO REF AML PG # 102402139 ITEM 1 FOR ADDITIONAL CORRECTIVE ACTION.

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