# SDR C2XA11CL042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2011
- Submitted: February 11, 2011
- Operation: Air carrier
- Aircraft: [N12552](https://openairdocs.org/aircraft/N12552), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145583
- Aircraft time: 20,284 hours, 15,445 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Pressure Switch
- Part number: 7821008
- Part serial: 2892
- Condition: Faulty
- Location: Bleed Air Sys
- Part time: 2,208 hours, 1,681 cycles
- Stage of operation: DE
- 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/C2XA11CL042

## Discrepancy

THE CREW REPORTED THE CABIN PRESSURIZATION DID NOT DESCEND ON SCHEDULE.  MAINTENANCE INSPECTED AND REPLACED THE HIGH STAGE VALVE PRESSURE SWITCH AND CONNECTOR P1203.  OPERATIONAL CHECKS WERE GOOD.

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