# SDR 96ZZZM1239

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 1, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N314AW](https://openairdocs.org/aircraft/N314AW), registered now
- Make and model: Boeing 737-3S3
- Registry model: [Boeing 737-3S3](https://openairdocs.org/model/boeing-737-3s3) (OpenAirDocs)
- Aircraft serial: 23733
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Precooler
- Part number: 1947924
- Condition: Cracked
- Location: Nr 2 Engine
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZM1239

## Discrepancy

DEN - FLT 2484 - AIR TURNBACK, AIRCRAFT DEPARTED DEN AND WOULD NOT PRESSURIZE ON ONE BLEED (NR 2 BLEED ON MEL).  AIRCRAFT FERRIED TO PHX.  ENGINE NR 1 HIGH STAGE VALVE TEST FAILED.  REMOVED AND REPLACED NR 1 HIGH STAGE VALVE.  REFERENCE MEL 36-05.  FOUND CRACKED PRECOOLER.  REMOVED AND REPLACED PRECOOLER AND SENSE LINES.  REFERENCE AWXA960299.

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