# SDR DL75E091230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2009
- Submitted: July 23, 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: 40,497 hours, 14,108 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 211738813
- Part serial: 402059702270
- 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/DL75E091230

## Discrepancy

CABIN ALT INOP EICAS MESSAGE SYSTEM 1 AND SYSTEM 2.  REPLACED NR 1 AND NR 2 AUTO PRESS CONTROLLERS, CHECKS GOOD.

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