# SDR SIMA20120408001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2012
- Submitted: April 9, 2012
- Operation: Air carrier
- Aircraft: [N932AE](https://openairdocs.org/aircraft/N932AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500915
- Aircraft time: 18,633 hours, 15,212 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cabin Pressure
- Condition: False Indication
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20120408001

## Discrepancy

FLIGHT 4050, CREW REPORTED THAT AT 34,000 FT CABIN ALTITIUDE WAS AT 300 FT AND RISING QUICKLY WITH A DIFFENTAL PRESSURE OF 6.8 PSI.  PRESSURE STABILIZED AT A CABIN ALTITUDE OF APPROXIMATELY 12,700FT AFTER A RAPID DESCENT TO 10K.  DECLARED AN EMERGENCY AND DIVERTED.   AIRCRAFT LANDED WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  PERFORMED OPS CHECK IAW AMM 21-31-00 AND OPS CHECK OF PRESSURIZATION CONTROL SYSTEM.  OPS CHECKED GOOD.  AIRCRAFT RETURNED TO SERVICE.

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