# SDR TWAA9741003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N907TW](https://openairdocs.org/aircraft/N907TW), registered now
- 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: 49165
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Selector
- Condition: Failed
- Location: Cockpit
- 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/TWAA9741003

## Discrepancy

STL - FLT 10 - AFTER TAKEOFF, COULD NOT PRESSURIZE CABIN IN EITHER PRIMARY OR STANDBY MODE.  NR 1 SYSTEM.  NR 2 SYSTEM PREVIOUSLY PLACARDED.  FLIGHT RETURNED TO STL.  REPLACED PRESSURE SELECTOR.  CHECK OF PRIMARY AND SECONDARY CONTROLLERS OPERATION NORMAL.  CHECK C-OD - 3-10-97 - STL.  (X)

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