# SDR SIMA20120827005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 27, 2012
- Submitted: August 29, 2012
- Operation: Air carrier
- Aircraft: [N680AE](https://openairdocs.org/aircraft/N680AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500820
- Aircraft time: 21,625 hours, 18,528 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 912R0301
- Part serial: 01881
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20120827005

## Discrepancy

FLIGHT 4264,  CREW REPORTED THAT CLIMBING-OUT OF 27,600 FL CABIN PRESSURE WAS LOWER THAN CHART ON 21-24.  INCREASED TO STAY ON CHART.  AT 3000FL CABIN ALT LOST.  INITIATED AN EMERGENCY DESCENT, DECLARED AN EMERGENCY AND COMPLIED WITH AOM VOL 1 CHECKLIST AND DIVERTED TO DEPARTURE.  LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  TROUBLESHOT IAW FIM 21-31-00, HAD DIFFICULTY WITH THE MANUAL CONTROLLER.  REMOVED AND REPLACED THE MANUAL CONTROLLER IAW AMM 21-31-02.  OPS CHECKED GOOD.  NO FURTHER FAULTS FOUND.  DISCREPANCY CLEARED.  OUTFLOW VALVES CHECKED GOOD IAW AMM 21-31-00.  AIRCRAFT RETURNED TO SERVICE.

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