# SDR DXTA200811223367

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 2008
- Submitted: June 12, 2009
- Operation: Air carrier
- Aircraft: [N739QS](https://openairdocs.org/aircraft/N739QS), registered now
- Make and model: Gulstm 200
- Aircraft serial: 198
- Aircraft time: 215 hours, 127 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 21199227
- Part serial: 12F0030
- Condition: Inoperative
- Location: Cabin Pressure
- Part time: 1 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200811223367

## Discrepancy

IMMEDIATELY AFTER TAKEOFF, POWER SET, WE GOT THE RED DITCH LIGHT THE YELLOW AUTO PRESS FAULT LIGHT AND THE FOLLOWING EICAS MESSAGES CABIN ALT HIGH AUTO PRESS R FADEC MINOR PRESS MONITOR ADDITIONALLY THE CABIN OXYGEN MASK DEPLOYED. INTERAGATED MDC AND FOUND CPC CHANNEL A AND B FAILURE. REMOVED FAULTY CPC AND INSTALLED A REPAIRED UNIT. PERFORMED OPS TEST WITH NO FAULTS NOTED IAW MM 21-30-00 AND 21-30-07 (VERIFY MODE, MANUAL MODE TEST, AUTO PRESSURE TAKEOFF MODE).

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