# SDR AT0500001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2005
- Submitted: January 10, 2005
- Operation: Air carrier
- Aircraft: [N894AT](https://openairdocs.org/aircraft/N894AT), registered now
- Make and model: Boeing 717-200
- Registry model: [Boeing 717-200](https://openairdocs.org/model/boeing-717-200) (OpenAirDocs)
- Aircraft serial: 55046
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 92145A010101
- Part serial: 0254
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CR
- 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/AT0500001

## Discrepancy

CABIN INFLOW LOW, CABIN CLIMBED 300-400 FT/MIN BEST CASE 1700-1800 FT/MIN WORST CASE, FORCED DESCENT TO MAINTAIN CABIN ALTITUDE OUTFLOW.  VALVE FAILED TO CLOSE IN AUTO OR MANUAL.  REMOVED AND REPLACED CPC.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.