# SDR AALA2009051300004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2009
- Submitted: July 16, 2009
- Operation: Air carrier
- Aircraft: N577AA
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 53154
- Aircraft time: 52,867 hours
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Selector
- Part number: 21171803
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: NR
- 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/AALA2009051300004

## Discrepancy

CREW REPORTED CABIN LOST PRESSURIZTION. LANDED STL WITHOUT INCIDENT.  FOUND NR 1 PRESSURE CONTROL INOPERATIVE. REPLACED NUMBER ONE CABIN PRESSURE CONTROLLER AND NR 1 AND 2 CABIN PRESSURE SELECTOR. MPN 1304768.   SYSTEM GROUND CHECK NORMAL OPERATION. (CLOSED)

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