# SDR SIMA20250505002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2025
- Submitted: May 6, 2025
- Operation: Air carrier
- Aircraft: [N250NN](https://openairdocs.org/aircraft/N250NN), 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: 17000635
- Aircraft time: 21,275 hours, 14,241 cycles
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Shunt
- Condition: Faulted
- Location: Bleed Air Sys
- 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/SIMA20250505002

## Discrepancy

BLEED 1 OVRPRSS. ATC DECLARED EMERGENCY. RETURN TO DFW. ACCOMPLISH PER ERJ WC 36-11-03-001. NAPRSOV VALVE FILTER CLEANING OF NACELLE PRESSURE-REGULATING SHUTOFF-VALVE FILTER BY ULTRASONIC METHOD. OPC BLEED 1 FAIL AND BLEED 1 OVERPRESSURE GOOD IAW AMM 36-11-00 MEL ITEM RESTORED.

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