# SDR SWAA2015011535746

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2015
- Submitted: January 15, 2015
- Operation: Air carrier
- Aircraft: [N552WN](https://openairdocs.org/aircraft/N552WN), registered now
- Make and model: Boeing 737-7BX
- Registry model: [Boeing 737-7BX](https://openairdocs.org/model/boeing-737-7bx) (OpenAirDocs)
- Aircraft serial: 30744
- Aircraft time: 42,640 hours, 23,897 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Control Valve
- Part number: 3289562
- Condition: Faulty
- Location: Bleed Air Sys
- Stage of operation: UK
- 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/SWAA2015011535746

## Discrepancy

DECLARED EMER DUAL BLEED TRIPPED.  R & R NR 1 PRECOOLER CONTROL VLV IAW MM.

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