# SDR SIMA20190503002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2019
- Submitted: June 3, 2019
- Operation: Air carrier
- Aircraft: [N663AR](https://openairdocs.org/aircraft/N663AR), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145778
- Aircraft time: 37,455 hours, 32,773 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 2097K021100
- Part serial: 02305
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20190503002

## Discrepancy

SUPPLEMENTAL AIRCRAFT WILL NOT PRESSURIZE IN AUTO OR MANUAL. C/A-AUTO AND MANUAL PRESSURIZATION DEFERRED PER MEL 21-19 AUTH#050084DM-C MEL PROCEDURES 21-19 C/W. REMOVED AND REPLACED ELECTROPNEUMATIC OUTFLOW VALVE IAW AMM 21-31-03. AUTO TEST FAILED BUT AFTER VERIFYING THAT ALL LINES WERE TIGHT ON BOTH OUT FLOW VALVES AND RESETTING POWER PERFORMED FUNCTIONAL TEST OF AUTO PRESSURIZATION  IAW AMM 21-31-00-700-802-A, OPC GOOD. PERFORMED PRESSURIZEATION ON MANUAL MODE IAW AMM 21-31-00, OPS CHECK GOOD, (M) COMPLY WITH 21-19 SECTION 4, REMOVED LOCK OUT TOOL.  AFTER REACTIVATING THE PNEUMATIC OUTFLOW VALVE AND  CHANGING ELCTROPNEUMATIC OUTFLOW VALVE IAW AMM 21-31-03, THE PRESSURIZATION SYSTEM FUNCTIONAL CHECK GOOD IAW AMM 21-31-00-700-802-A AND MANUAL PRESSURIZATION OPC GOOD IAW AMM 21-31-00-700-801-A. THIS RESTORES MEL 21-19.

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