# SDR DL733050323

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2005
- Submitted: June 17, 2005
- Operation: Air carrier
- Aircraft: N308WA
- Make and model: Boeing 737347
- Aircraft serial: 23441
- Aircraft time: 52,735 hours, 35,926 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 28410
- Part serial: 133
- Condition: Unserviceable
- Location: Cabin Pressur
- Stage of operation: CL
- 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/DL733050323

## Discrepancy

AIRCRAFT WOULD NOT PRESSURIZE.  FOUND AUTO FLOW CONTROL VALVE NOT CLOSING PER CABIN PRESS LEAK TEST 05-51-91-702.  REPLACED VALVE PER MM 21-58-31. OP CK OK.  AIRCRAFT PRESSURIZED ON GROUND PER MM.

---
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.