# SDR SWAA2014120134573

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 25, 2014
- Submitted: December 2, 2014
- Operation: Air carrier
- Aircraft: N416WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32453
- Aircraft time: 45,730 hours, 26,457 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Control Valve
- Part number: 32895625
- Part serial: 1596C
- Condition: Faulty
- Location: Bleed Air Sys
- 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/SWAA2014120134573

## Discrepancy

DIVERSION, DECLARED EMER DUAL BLEED TRIP, WOULD NOT RESET UNTIL 13,000'.  PRESSURIZATION EVENT, MASKS DROPPED, EMER DESCENT.  R & R LT ENG PRE COOLER CONTROL VLV IAW MM.

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