# SDR SWAA2016011347932

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2016
- Submitted: January 13, 2016
- Operation: Air carrier
- Aircraft: [N365SW](https://openairdocs.org/aircraft/N365SW), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 26576
- Aircraft time: 73,116 hours, 60,486 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 32144464
- Part serial: 10445
- Condition: Failed
- Location: Bleed Air Sys
- Stage of operation: CL
- 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/SWAA2016011347932

## Discrepancy

AIR TURN BACK, DECLARED EMER CLIMBING THROUGH 25,000 FT.  CABIN ALTITUDE WARNING HORN & FLIGHT ILLUMINATED.  R & R NR 1 ENG HIGH STAGE VLV IAW AMM.

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