# SDR C2XA11RI085

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 23, 2011
- Submitted: May 25, 2011
- Operation: Air carrier
- Aircraft: N18102
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 145643
- Aircraft time: 24,319 hours, 12,875 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 22250N030301
- Part serial: 00691
- Condition: Defective
- Location: Cabin Pressure
- Part time: 23,636 hours, 16,622 cycles
- Stage of operation: CR
- 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/C2XA11RI085

## Discrepancy

FLIGHT 2398 - EWR - FLIGHT CREW REPORTED PRESSURIZATION DIFFERENTIAL READS ABOUT 1-2 PSI LOWER THAN IT SHOULD AT ALL ALTITUDES - FL350- 5.9 PSI.  EWR MX REMOVED AND REPLACED DIGITAL AND MANUAL PRESSURIZATION CONTROLLERS.  EWR MX PERFORMED OPERATIONAL CHECK SUCCESSFULLY.  ACFT WAS APPROVED TO RETURN TO SERVICE.  SDR # C2XA11RI084 REPORTS MANUAL CONTROLLER AND SDR# C2XA11RI085 REPORTS DIGITAL CONTROLLER

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