# SDR 95UAL727030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N7266U
- Make and model: Boeing 727222
- Aircraft serial: 21413
- Engine: Pwa JT8D15
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Malfunction
- Location: Cabin Press
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95UAL727030

## Discrepancy

UNABLE TO CONTROL CABIN PRESSURE IN STANDBY OR MANUAL.  MADE EMERGENCY DESCENT TO 10,000 FEET AND GOT PRESSURE TO STABILIZE.  UNABLE TO CONTROL OUTFLOW VALVE.  CABIN WILL RISE BUT WILL NOT DESCEND.

---
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.