# SDR USAABB00123

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2000
- Submitted: January 25, 2001
- Operation: Air carrier
- Aircraft: N649US
- Make and model: Boeing 767201
- Aircraft serial: 23901
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 60683218
- Condition: Faulty
- Location: Fuselage
- Part time: 21,303 hours
- 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/USAABB00123

## Discrepancy

PHL - FLT 12 - EN ROUTE PHL-MAD, CREW RECEIVED AUTO-PRESSURIZATION FAULTS ON BOTH PRESSURIZATION CONTROLLERS.  FLIGHT RETURNED TO PHL AND LANDED WITHOUT FURTHER INCIDENT.  MAINTENANCE REPLACED THE OUTFLOW VALVE.  (M)

---
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.