# SDR 00121

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2003
- Submitted: November 14, 2003
- Operation: Air carrier
- Aircraft: [N158TW](https://openairdocs.org/aircraft/N158TW), registered now
- Make and model: Amd FALCON
- Aircraft serial: 158
- Aircraft time: 11,222 hours, 10,924 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 133007
- Part serial: 715
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/00121

## Discrepancy

PILOT REPORTED UNABLE TO CONTROL PRESSURIZATION AFTER DEPARTURE FROM KYIP, RETURN TO DEPARTURE AIRPORT FOR MAINTENANCE.  MAINTENANCE REMOVED AND REPLACED CABIN PRESSURE CONTROLLER OPS CK GOOD AT THIS TIME.

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