# SDR DL75E090836

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2009
- Submitted: May 8, 2009
- Operation: Air carrier
- Aircraft: [N707TW](https://openairdocs.org/aircraft/N707TW), registered now
- Make and model: Boeing 757-2Q8
- Registry model: [Boeing 757-2Q8](https://openairdocs.org/model/boeing-757-2q8) (OpenAirDocs)
- Aircraft serial: 27625
- Aircraft time: 39,680 hours, 13,962 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 211738813
- Part serial: 702270
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL75E090836

## Discrepancy

ON TAXI OUT, CABIN PRESSURE AUTO INOP ILLUMINATED BOTH AUTO 1 AND AUTO 2.  T/S PER SSM 21-30-00.  SUSPECT K207 RELAY ON ENG START.  REMOVED AND REPLACED SAME PER MM.  REMOVED AND REPLACED CABIN PRESS OVHD PANEL PER AMM DUE TO BOTH AUTO MSGS.  DUE TO PREVIOUS HIST OF AUTO 2 CNTLR CHANGED AND ON BITE FND CONTROLLER FAULT AND MOTOR FAULT ON 2ND ATTEMPT NO FAULT.  REMOVED AND REPLACED AUTO 2 CONTROLLER PER AMM.  NOW NO MSGS.  A/C OK FOR SERVICE.

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