# SDR IPXA2020080318479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2020
- Submitted: August 3, 2020
- Operation: Air carrier
- Aircraft: [N413UP](https://openairdocs.org/aircraft/N413UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23853
- Aircraft time: 33,424 hours, 22,791 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 60683221
- Part serial: 141905
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2020080318479

## Discrepancy

EMERGENCY DECLARED,  PASSING FL230, RECIEVED CABIN ALT WARNING 9CABIN ALT 10,000` AND CLIMBING CABIN ALTITUDE WAS NOT CONTROLLABLE. FOLLOWED CHECKLIST, DIVERTED. T/S PERFORMED CABIN PRESSURE OUTFLOW VALVE CHANGED IAW AMM 21-31-03-002-001. OPS CHECKED GOOD.

---
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.