# SDR SIMA20260321001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2026
- Submitted: March 23, 2026
- Operation: Air carrier
- Aircraft: [N231AN](https://openairdocs.org/aircraft/N231AN), 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: 17000554
- Aircraft time: 25,024 hours, 17,004 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Relay
- Condition: Failed
- Location: Recirc Fan
- 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/SIMA20260321001

## Discrepancy

RECIRC FAN 1 FAIL DECLARED EMERGENCY MTX INSP, DEFERRED LH RECIRCULATION FAN PER MEL 21-05. R & R RELAY K5 IN THE LICC IAWAMM 20-32-02 AND OPS CHECK RECIRCULION SYSTEM IAW AMM 21-24-00 OPS CHECK GOOD MEL IS RESTORED.

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