# SDR R61A201812271266

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2018
- Submitted: January 2, 2019
- Operation: Air carrier
- Aircraft: [N857RW](https://openairdocs.org/aircraft/N857RW), registered now
- Make and model: Emb ERJ 170-100 SE
- Registry model: [EMB ERJ 170-100 SE](https://openairdocs.org/model/embraer-erj-170-100-se) (OpenAirDocs)
- Aircraft serial: 17000079
- Aircraft time: 38,380 hours, 22,787 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 4952447
- Part serial: 0713A
- Condition: Inoperative
- Location: Cabin Pressure
- Part time: 10,826 hours, 7,135 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/R61A201812271266

## Discrepancy

RAPID DEPRESSURIZATION AT FL310. DESCENDED TO 10,000 FEET MAX CABIN ALT 11,600. DECLARED EMERGENCY, DIVERTED TO ORD, LANDED WITHOUT INCIDENT. R&R OUTFLOW VALVE.

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