# SDR SIMA20251204001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2025
- Submitted: December 10, 2025
- Operation: Air carrier
- Aircraft: [N203NN](https://openairdocs.org/aircraft/N203NN), 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: 17000473
- Aircraft time: 28,134 hours, 18,636 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator
- Part number: 10012463
- Condition: Failed
- Location: Bleed Sys
- 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/SIMA20251204001

## Discrepancy

BLEED 2 FAIL AT ALTITUDE. ENG BLEED SYS - XBLD OPERATIVE - M1 BLEED 1 PRESSURE UNSTABLE IN CRUISE 6-47 PSI AND RATE CHANGES OF -250/200 MSG EVENTUALLY CLEARED VIA QRH PROCEDURE INFO TO MTX. INFO NOTED TO MTX MOC 230070. RAR LH ENGINE NAPRSOV HIGH STAGE BLEED VALVE IAW ERJ 175 AMM 36-11-03. OPC GOOD. MEL RESTORED.

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