# SDR MYW2004F00001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 25, 2004
- Submitted: June 7, 2004
- Operation: Air carrier
- Aircraft: [N734MA](https://openairdocs.org/aircraft/N734MA), registered now
- Make and model: Boeing 737-8Q8
- Registry model: [Boeing 737-8Q8](https://openairdocs.org/model/boeing-737-8q8) (OpenAirDocs)
- Aircraft serial: 30039
- Engine: Ge CFM56*
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 71211997101AC
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MYW2004F00001

## Discrepancy

IN FLT NR 620, HSV/LAS AUTO PRESSURIZATION FAILED.  AUTO SWITCHING ACCOMPLISHED.  QUICK REFERENCE HANDBOOK PROCEDURES ACCOMPLISHED.  ITEM TRANSFERRED TO DMI LOG NR 1994 IAW 21-15-2B.  TRANSFERRED FROM DMI LOG NR 1994.  TROUBLESHOT SYSTEM.  REMOVED AND REPLACED NR 1 PRESSURE CONTROLLER IAW AMM 21-31-02.  SYSTEM OPS CHECKED NORMAL.  CLEARED DMI.  AC RETURNED TO SERVICE.

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