# SDR SWI2025F00310

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2025
- Submitted: March 7, 2025
- Operation: Air carrier
- Aircraft: [N501SY](https://openairdocs.org/aircraft/N501SY), 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: 17000882
- Aircraft time: 7,506 hours, 4,401 cycles
- System (JASC): [2100 · Air Conditioning System](https://openairdocs.org/jasc/2100)
- Part: Module
- Condition: Faulted
- Stage of operation: DE
- 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/SWI2025F00310

## Discrepancy

AMS CTRL FAIL CAUTION MESSAGE APPEARED AT APPROXIMATELY FL230-240 DURING DESCENT ON ARRIVAL.    (FLIGHT 6256 - FILED CLOSED)    INTERROGATED CMC AND FOUND FAULT CODE 21000100. TROUBLESHOT PER ERJ-175 FIM 21-00-00-810-808-A. REMOVED AND REPLACED AMS CTRL MICRO MOD ON SPDA 2 SLOT 25 IN REFERENCE TO ERJ-175 AMM 21-00-01. CHECKED AND VERIFIED BOTH AMS CTRL MICRO MODS HAVE SAME SOFTWARE IN REFERENCE TO ERJ-175 AMM 21-00-00-910-802-A. MSGS CLEARED. A/C OK FOR CONT SVC.

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