# SDR SIMA200812110

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2008
- Submitted: April 30, 2008
- Operation: Air carrier
- Aircraft: [N638AE](https://openairdocs.org/aircraft/N638AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145172
- Aircraft time: 19,793 hours, 19,515 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 92185A010200
- Part serial: 00651
- Condition: Malfunctioned
- Location: Cabin Pressure
- Part time: 6,459 hours, 5,882 cycles
- 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/SIMA200812110

## Discrepancy

ON FLIGHT 4306, CREW REPORTED WHILE CLIMBING THRU 19000 THEY RECEIVED CABIN ALT WARNING AND AURAL WARN.  CREW REQUESTED EMERGENCY DESCENT TO 10000 AND RETURNED TO CVG.  AIRCRAFT REMOVED FROM SERVICE.  REMOVED AND REPLACED DIGITAL PRESSURIZATION CONTROLLER IAW AMM 21-31-01.  OPERATIONAL CHECKED GOOD.  NO FURTHER FAULTS FOUND AT THIS TIME.  AIRCRAFT RETURNED TO SERVICE.

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