# SDR SIMA201120903

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 26, 2011
- Submitted: July 28, 2011
- Operation: Air carrier
- Aircraft: [N612AE](https://openairdocs.org/aircraft/N612AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145079
- Aircraft time: 29,807 hours, 27,940 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA201120903

## Discrepancy

ON FLIGHT 4212 THE CREW REPORTED THE AIRCRAFT PRESSURE DROPPED 3000 FPM WITH CABIN DOOR CLOSED.  TRIED MANUAL PRESSURIZATION WITH ENGINE 2 & APU BLEED SOURCES.  POSSIBLE STICKY VALVE.  TRIED SELECTOR FULL UP 7 DOWN.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  PERFORMED OPERATIONAL CHECK OF THE MANUAL PRESSURIZATION MODE IAW EMB MM 21-31-00, THE OPERATIONAL CHECK WAS GOOD.  NO DEFECTS NOTED.  AUTO PRESSURIZATION STILL DEFERRED.  CORRECTIVE ACTION INFORMATION PENDING.

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