# SDR MWEA011247

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 5, 2001
- Submitted: September 7, 2001
- Operation: Air carrier
- Aircraft: [N701ME](https://openairdocs.org/aircraft/N701ME), registered now
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 49760
- Aircraft time: 44,755 hours, 15,677 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 5653731503
- Part serial: 0272
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MWEA011247

## Discrepancy

LOST BOTH NR 1 AND 2 AUTO PRESSURIZATION CONTROLLERS AT 8,000 FEET.  WITH THE CABIN OUTFLOW VALVE FULLY CLOSED CABIN CLIMBED AT 400 FEET.  UNABLE TO CONTROL IN MANUAL.  REMOVED AND REPLACED OUTFLOW VALVE ASSEMBLY.

---
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.