# SDR 00105

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2003
- Submitted: August 15, 2003
- Operation: Air carrier
- Aircraft: [N221TW](https://openairdocs.org/aircraft/N221TW), registered now
- Make and model: Amd FALCON
- Aircraft serial: 221
- Aircraft time: 20,185 hours, 15,712 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CL
- 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/00105

## Discrepancy

DURING CLIMBOUT, THE CABIN PRESSURE BEGAN TO CLIMB AND DESCEND AT HIGH RATES UNTIL THE CABIN STOPPED PRESSURIZING AT ALL. CONTINUED TO BE ERRATIC UNTIL LANDING.  MAINTENANCE R & R PESSURIZATION RATE CONTROLLER OP'S AND LEAK CHECK GOOD.

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