# SDR SIMA2020043029001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2020
- Submitted: May 1, 2020
- Operation: Air carrier
- Aircraft: [N685AE](https://openairdocs.org/aircraft/N685AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500836
- Aircraft time: 38,356 hours, 33,804 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 209K021100
- Part serial: 02180
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA2020043029001

## Discrepancy

SUPPLEMENTAL CLIMBING THROUGH FL280 CABIN ALT WAS AT 8900. SHORTLY WENT INTO THE RED RANGE AND POST A CABIN ALT OF 10000 FT. DESCENDED AND CABIN PRESSURE APPEARED TO RETURN TO NORMAL. DEFERRED PRESSURIZATION SYSTEM AUTOMATIC AND MANUAL MODE. M PROCEDURES C/W AUTH 020281DM-C REF 21-19. REACTIVATED SYSTEM IAW AMM 21-31-03-440-801-A. REMOVED AND REPLACED ELECTROPNEUMATIC OUTFLOW VALVE OPS CHECK GOOD IAW AMM 21-31-00 MEL RESTORED.

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